I guess the xAI thing might just be a money grab for Telegram and Durov.
The Russian MPs thing might be a red herring, there's been plenty of stuff recently aimed at distracting from this Telegram story – including a brand new interview by Tucker Carlson with Durov.
Telegram and Durov knew for weeks this is coming, as the investigative journalists had tor each out for comment. So they had time to prepare their little games.
If IStories' reporting on GNM's connection to FSB and GNM's access to Telegram's traffic is correct – and I have no reason to believe otherwise, this has gone through two rounds of fact-checking and these are people who had been sued for "defamation" in the most journalist-hostile, oligarch-friendly jurisdiction in the world (UK) and have repeatedly won – then this means the threat model now includes the FSB potentially being able to:
Both of these globally, regardless of what SIM card was used to register any of accounts involved, and without having to ask Telegram for any data.
I don't know if FSB is actually using this capability, and to what extent, and against whom. But based on IStories' reporting and on my own packet captures analysis it is entirely possible for them to do so if they choose to.