European here.
Although I disagree with lots of things that the EU does, this one is particularly great to hear because of how Telegram is used by Russian propaganda, as well as often used by various criminals such as drug dealers, pedophiles and others. Heck, I would even say that ordering a hitman is as easy as ordering a pizza from your favorite chain. So, basically, everything you should expect on the dark web, is freely available on the App Store, even to kids, while "respecting" free speech in an even bigger degree than post-Musk Twitter.
Not to mention the company is somehow affiliated with Putin's regime and ignores law.
Just because it has Russian propaganda doesn't mean the CEO should be arrested. If this is true, then all CEO of all major social media platforms should be arrested as all social media used by both Russia or Western counties for its own respective propaganda.
It just to you or most people here, Russian propaganda is worse than western one.