I don‘t think you understand my point. Let me be a bit more high level. It’s not about the three major outages WhatsApp had this year for like 30 mins. or whatever.
A perfectly set up Matrix server with more than enough resources allocated has issues decrypting messages when there’s a few hundred people and that’s without federation. This is still happening to today, fully updated server and clients.
As I said, I know they are working with a lot less resources than Meta. But at the moment the implementation doesn’t even do the most basic thing, deliver messages reliably. I know their new encryption library is supposed to do a better job but it’s just the cold hard truth that it’s not up there with the big messengers yet. Denying that doesn’t do the project any good.
I think Ghost might be the best option. They just launched their beta Fediverse integration a few days ago.