This seems to be a blatant lie. In russia telegram is wdidely used to prosecute people and crack down on descent. KGB (today know as FSB) seem to have free access to anything not encrypted on the platform.
I have no reason to doubt that, and evidence supports that statement (i.e. the fact that it got unblocked in Russia, after previously having been blocked).
They could in any case very well be selectively applying that policy. But if they were fully cooperating with French authorities, why would there be a warrant?
Why would KGB would share their toys with western powers? They have their ring of dictatorships to use it as one of most potent propaganda and tracking tools.
