It’s terrible. I posted something regarding this on Mastodon:
We’ve covered multiple stories on @sr where Telegram gave user data to governments, despite their site denying it ever happened. These new Telegram ‘changes’ are them being honest about their privacy for the first time.
Case from 2022:
Rant
For years I’ve been hearing people in the community and even some clients I work with spread misinformation about Signal, while turning a blind eye to obvious lies being spread by Telegram. Telegram is not the worst tool to use in the world, but I’m not sure how anyone can take any claim they make at face value when they’re completely dishonest about the privacy they realistically offer their users. It’d be better if they didn’t have a transparency report than to have one and lie. I guess we live in a world where people would rather blindly follow what someone says rather than look at the evidence for themselves. Ironically the people using Telegram under the belief that everything else is compromised are the biggest ‘sheeple’ in the room (quoting some Telegram users who gave me shit for using Signal 
)
Thanks for listening to my rant. Please think critically and get information from multiple sources!!