Let me preface this by saying that I disagree with your viewpoint in its entirety, and that I am not an admin nor an instance moderator on Kbin.

Here's the thing. If your intention is to come into Kbin, or Lemmy, or any other space here, and start spouting your viewpoint anywhere and everywhere - for example, in Pro-Trans spaces, or in spaces that have nothing to do with gender, you can expect some heavy pushback, including (likely) removal from those spaces. If your intention is to come in here and find or create a community that is conducive to posting about your viewpoint, you probably won't really have much trouble.

You sound like someone who is looking to make trouble, though, which is the only reason I can see for you to have posted this in this particular manner. If that's your intention, I think I can safely say, on behalf of the Lemmy / Kbin community, fuck right off. There's plenty of Lemmy instances that you can join that won't kick you out for this viewpoint, so probably go find one of those.

People's existence is not the subject of debate. Bugger off, troll.

I'm sure you'll be able to find a kbin instance that will tolerate and indeed celebrate whatever views you hold - if not, you can simply start a new instance yourself.

The extent to which other instances will federate with it is a differet question.

You say kbin as if it's a unitary thing, but that's not quite right. Between Lemmy and Kbin, there's a whole slew of instances being ran. Go find you one that will take you and join there. If you get banned, go find another one. If you run out, start your own.

This applies to literally any viewpoint or opinion. All the tankies, for example, hang out over at lemmygrad.ml

I guess time will tell, but I'd question why you need to assert this? What difference does it make whether people want to consider their gender fluid or not?

"I'm not looking for a fight, but I am going to say this thing that invalidates the reality of an entire class of people."

No. That's not an "acceptable viewpoint". Tolerance of the intolerant is intolerable.

But that said, if you spend most of your time here talking about normal topics and stay off the anti-trans bullshit, you won't be banned.

Good thing you don't determine what's reality and what isn't with your personal assertions then, as you're not very good at it.

On whether you'll be banned, hopefully. Hate speech is not protected speech.

Freedom of speech isn't freedom from consequences. And your right to say what you want doesn't mean people will want to listen to it, nor that they shouldn't express their disapproval by whatever means they wish.

Try it and find out. If you get banned, start your own instance. People will be free to join you, ignore you, and/or defederate you as they see fit.

Is this an acceptable viewpoint

No. Go away.

Afaik, it isn't expressly forbidden. But you aren't going to have much luck spouting that kind of inaccurate view. I mean, I'm having trouble not poking at the egregiously misused words in there, and I'm fairly chill about letting people figure things out on their own.

So, I don't think you'll find the viewpoint tolerated by fellow users, regardless of what any official stance is