There are maybe half a dozen platforms I see people suggesting as Discord alternatives. So the list of options is fairly short.

I guess my questions would be:

1. Do any alternate platforms look like they would meet your needs (or your desires for the community you're trying to build)?
2. Which of the platforms that fit (1) are your followers willing to join?
3. Which platforms that fit (1) would your Discord community be willing to move to?

And I think that if you see an option you like the look of, there's no harm in trying it out. Create a space, invite a few of your Discord people to take it for a test drive with you. (Wait to advertise it until you know whether you'll keep it.) If it seems like a good fit, then you'll be free to drop Discord.

My personal situation with these platforms is that I am willing to create an account anywhere, but there's no point in signing up to a platform unless there is someone I want to contact or a community I want to join. So far, despite the backlash all my connections are still only on Discord. And therefore, so am I. I'm probably not the only one like that.