It shows what the EU action is about. It's not about telegram's supposed crimes, whatever you think they are, because other platforms are full of the same crimes.
The difference is that other platforms give EU states access to people's private messages. If you go into the technicalities of what EXACTLY this means, it started with a list of 27 organizations that got blanket access, without judicial oversight (because all of the different rules from the member states apply. Some do not require judicial oversight). Organized long ago by Interpol. It grew from there, exactly as people expected.
Oh and in case you're wondering. This already exists. It is NOT about the new EU directive ("directive 92"). This is about delivering specific individual's messages, when specifically asked to, and maybe blocking them.
Which EU action? France which arrested Durov is not the EU. The EU can't arrest anyone, only the member states can. Durov was not arrested because of the EU DSA.