They keep ignoring Monero support request over 5 years while its one of most requested feature. https://protonmail.uservoice.com/forums/935538-accounts-payments/suggestions/33188971-accept-monero-for-payment
and bitcoin is not available as a payment method during account sign up, only after creating the account.
You should check privacy coin Monero.
Matrix and XMPP is pretty much popular in XMR community
And often discord and telegram channels are bridged with other platforms.