As has been pointed out before, it's only bigotry if you continue to misgender someone after being repeatedly asked not to. It's bigotry when you persist in the problematic behaviour even when you know it's problematic. It's okay to slip up occasionally, but it's not okay to persist against someone's wish.
I know analogies are fraught with danger, but here's one anyway. My name in meatspace, it might surprise you to know, isn't Arthwollipot but Andrew. But I detest the name Andy. If you call me Andy, I will politely ask you to call me Andrew. If you forget and accidentally call me Andy, I will forgive you. I will remind you, but I will forgive you. But if you clearly and deliberately persist in calling me Andy despite the fact that you know I don't like it, that's not okay. In this particular case I would probably stop short of calling it "bigotry" but no analogy is perfect.
Am I "commanding" you to call me Andrew? No, I'm not. I'm asking you, and by not complying you are being an ass. Do you care that I now consider you an ass? If not, how is that a command? A command that is not complied with carries consequences. The only consequence that I can see for your not complying with my request is that I will consider you an ass, which you might not care about.