The title is incredibly hard to understand.

600k seems a bit too much. That’s a fairly large city.

Ultimately, even for me as someone who cares about it, it’s just become one of those things that I don’t prioritize. Life is hard and at some point I’d rather get something cool done with gmail reading all my private conversations than struggle with my own email server.

Not saying it’s a great choice but ultimately life is short and we need to focus on doing what feels right. People have to pick their battles and that’s life.

Thanks for the clarification I should have mentioned this. Especially for calls it is actually relevant but I feel like very few people actually use secret chats.

To clarify because this is always a point of confusion whenever the topic comes up. Telegram is, of course, transport encrypted. Someone listening on the wire cannot read your data. It is not end-to-end encrypted, meaning Telegram can always read your messages and can, in principle, give anyone access.

Blockchains have the property of being append-only, so a blockchain is precisely what makes it impossible to delete transactions. That being said, in a distributed system, once the message leaves trusted servers, it is obviously also impossible to delete it.