The problem here is not that Telegram disallows you from taking screenshots but that the OS, which should be on the side of the user, allows apps to disallow you from taking screenshots.
The OS probably doesn’t disallow any such thing, but several apps have found workarounds such as briefly setting the screen dark when it detects a screenshot, or various other forms of trickery.
The result is that the screenshot still gets taken (they have no way of disabling that), but the photo is unusable.
leadingthenet|4 years ago
The result is that the screenshot still gets taken (they have no way of disabling that), but the photo is unusable.
nahqz|4 years ago