if you are doing something to someone else and
they do not like it then you must stop doing it. That should be the standard we all aim for in
principle at least if not in practice.
This is a bastardized version of the already insufficient golden rule, it does not stand up to scrutiny. Unlike the golden rule, it doesn't lay a standard to judge by, is not based on empathy and is even more open for abuse. Golden rule in essence says '
put yourself in other's shoes', yours say '
the complainer is the authority'. The standard to judge by in the golden rule is you, and in practice that probably relied on the morals and empathy of the
majority, weeding out deviants (because you know there are always those whose standards are abhorrent and have no empathy). As insufficient as that is, yours have no standard, again it relies on the authority of the complainer. That's why it's so open for abuse.
Want to send criminals to prison? Too bad, they don't like it. Stop!
Moral philosophy has evolved quite a lot since the golden rule, your suggestion is not really one of the more easily defensible ones.
It is not for me to say how x should react in a given situation because
I am not x so my opinion counts for nothing. I may have experience of the event in question
but that does not give me license to say how someone else should act.
Good luck dealing with crime.
Of course the notion of reasonableness is entirely subjective <snip>

In law, perhaps. In skeptic circles the notion of reasonableness is based upon adhering to the principles of
critical thinking.
For me personally [and this only applies to me as I can only speak for myself and no one else ]
I listen to what feminists say. If it is reasonable I will agree with it.
If reasonableness is subjective - as you just suggested -, this is a meaningless standard. You'll agree, because you agree, not because of logical consistency, evidence or rational arguments.
For someone stressing the importance of skepticism and the difference between subjective interpretation and objective facts, you seem to favor subjective interpretation over objective facts. Or in internet slang 'feels over reals'.