Right. But it’s also not exactly “easy” which is what you’re saying it is.
If easy was a sliding scale. Easy would be enabled by default. Hard would be making it obscure and hard to find. I would say it’s definitely closer to the harder to find side. But that’s just me. But 3 clicks, and having to switch chats and maybe delete the old one to avoid confusion, none of that is easy.
In my OP, I was merely referring to how FB Messenger and Telegram functions the same.
Speaking to the protocol used for encryption is a moot point… because even if MTProto 2 was better, it’s still not enabled by default in both messengers.