That’s a ridiculous idea. If I buy a computer with an OS that has an encryption key to protect the hard drive, and later I need that key to remove my data to another system, I have an entirely reasonable expectation that I’m allowed to do so, regardless of how much the computer manufacturer doesn’t want me to.
Telegram users have never had privacy. Group chats are completely in the open and private messages are only encrypted if both users turn it on for each conversation—and it’s off by default. I’ve never understood why anyone thinks Telegram is any better than posting anywhere else on the internet.