They will offer a backdoor
Signal and Telegram do not have cash revenues from the EU, so they can be non-compliant.
Worse is if Apple and Android integrate these features directly to the operating system.
(Yes, it has an e2ee feature which you can turn on per chat if you remember, but nobody does this.)
Dude everyone minds that their _private_ correspondence is being read by prying eyes. Just because you’re technically inclined to do so [enable e2ee per chat] doesn’t mean that the lowest common denominator human is capable or willing to do so. Which is why secure by default - without state compromise a la Telegram & WhatsApp - is so important.
They have been rather quiet since. I wouldn't trust any of them to be "non-compliant".
How so? Don't Telegram Premium and Telegram Ads count as revenue?