> Even for their website they demand a phone number just to read anything.

Does it currently? I have a couple Discord accounts that never got tied to a phone number and can still use them.

Telegram on the other hand does that, I've never managed to get my own account for it without a phone number... and all the anonymous (pay for temp number) end up giving you a shared "account" that anyone can take from you if they get attribued the same number (and they will).