I recommend you watching this: https://youtu.be/Kc3GHWIprWU
It is an interview with a former neo-nazi who explains how he got into that, and how it works exactly as a cult. Nothing to do with Buddhism at least in a direct way but very interesting. If you can have some compassion with him, you may also have compassion with the people who are still in the cult and all their world is hate.
In the end it is all rooted in ignorance and the same to some extent can be also applied to us, our ideologies, our beliefs and so forth.
That is the problem, as much as possible is still 0. I already have all the alternatives installed in my phone but I can't use them if there is no one to talk to over there.
No one wants to do the effort to change even if this effort is to spend 5 minutes installing a free app. Why should I change? Then they look at me as Mr. TinfoilHat if I tell them the reasons. My only hope is Whatsapp turning to shit itself.
Link: https://ourworldindata.org/data-insights/the-world-has-probably-passed-peak-air-pollution
Edit: Missed my whole point of posting this specifically in the vegan sub lol, but I'm glad at least you found it as something positive.
slrpnk.net doesn't require an email, makes it optional in case you want it for password recovery. And as far as I know it doesn't have the restrictions you mention.