While I tend to sympathize with his case, for a grievance letter that was just way too long and rambling. So it puts the addressee -- who already faces considerabilities legal liabilities, as well as pressures from above if they respond the wrong way to such a letter -- in a position where they feel justified in seeing silence as a prudent response.
Plus, it just takes lots of time to parse and construct a response to such a torrent of TL;DR like that.
Much better would been to have spend some extra time coming up with something no longer than 1.5x as long as the letter he was responding to. You know, something readable. And then, for political as well as strategic reasons, open his wallet to have it professionally translated into French. Now that might get him the kind of traction he wants on this issue.