I'm trying to say that those two examples are incoherent and contradictory.
They are neither, and I think if you try to express clearly why they are inconsistent you'll discover that.
I think the problem here is that by your own admission you perceive any questioning of how you are using the term "asexual" to be insulting and an invalidation of your identity. It's very difficult for most people to reason about anything they perceive as part of their identity, which is a good reason for rationalists to try to construct their identity so that it doesn't depend on holding any particular ideas or labels.
That's nice? You can't say you aren't talking about orientation when you are talking about behavior. Whether or not someone has a 'motor' reflects in no way in their having 'steering' or 'wheels'. Just to stretch your analogy a bit further.
Sure I can. Masturbation is a behaviour. Gays, straights, paperclip-fetishists and a-oriented people all masturbate. That behaviour has nothing to do with orientation and everything to do with whether or not you have a sexual motor running.
In the context of sexual orientation, sexual orientation is all that matters. There are people whose sexual orientation is not towards males, females, both accepted extremes, the entire spectrum of sexual possibilities, but to 'none of the above'. This is where asexuality is perfectly comparable to atheism, the atheist looks at the list of religions offered and chooses 'none of the above'.
So why not call this "a-oriented", and leave the term "asexual" to refer to people who don't have any sex drive and don't masturbate? Other than that you've decided to make calling yourself asexual part of your identity, and so you feel that any criticism of that choice of words is an attack on your identity?
You're what you are. What you or anyone else calls you can't change it.
I've been answering it all the way through, I thought, I don't consider a individual's behavior to invalidate their sexual orientation. A man sexually attracted to men is homosexual (or a mix of bisexual if there's attraction to women) regardless of whether or not he EVER has sex, regardless of who he might ever have sex with. He is homosexual whether or not feather tickling arouses him, is he not? If fetishes don't all get their own orientations, and kinks just enhance the usual sexual interactions, why would how an asexual chooses to scratch an itch (whether or not I can relate to that itch) invalidate his or her sexual orientation?
You keep begging the question by assuming that "asexual" is a sexual orientation and then reasoning from there.
I'm trying to figure out why you're jamming behavior into orientation, it's even there in the question you want me to 'acknowledge' ---of course there's a difference between a-libidinous asexuals and asexuals with a libido! They're all still asexuals if none are sexually attracted to anyone. This definition has been constant throughout all of my posts, I've explained it at least twice now. Someone who is not sexually attracted to anyone (or anything, I feel the need to add that in) counts as asexual.
I'm glad we finally got that out in the open.
The problem here is that it's just plain counterintuitive to someone outside your particular social and linguistic clique to say "I'm asexual, and I masturbate like crazy". That statement makes no sense, except to people who've bought in to your particular cultural memes.
You're calling people who clearly have a sex drive asexual, and then calling the lack of any sexual orientation a sexual orientation. It's backwards twice, and it's a recipe for confusion.
I can see how it's useful for trolling, because people will bite at the misuse of language. I can also see how it could seem politically useful to piggyback on the gains of sexual orientations other than heterosexuality. However I don't think that usefulness makes up for the straightforward incorrectness of your chosen terminology.
To put it another way, I am a human female, so I don't have a penis. Suppose I decided that anyone who had experiences different from mine (like being able to catch the penis in a zipper) couldn't possibly be a person, as I defined myself. Would that make any sense at all for me to do? Would humans who happen to be male and possess a penis not feel insulted by this invalidation of their identity?
I already said this one, but obviously I have to say it again because you don't deviate easily from your preferred script. I am making absolutely no normative argument about how people should behave or be perceived. I'm making a strictly semantic argument about the terms you use and how you use them. If your self-identity is so bound up with the word "asexual" that you can't even discuss the use of the word without feeling insulted at this invalidation of your identity then maybe this is just a topic you should avoid.
It's kind of weird because you position yourself as asexual in the sense I think the word should be used, so my argument is no threat to your identity anyway, but whatever.