I think it was an amazing show.

However, while the show grabs your attention with its initial vigilante hacker plot, the story is fundamentally about the MC making peace with his mental trauma (which is incidentally why people tend to find season 2-3 weaker, since the vigilante hacker stuff takes a bit of a backseat), so if you enjoy great character development, an unreliable narrator (due to mental trauma) that makes you question what's real and what isn't, shrouded with a gripping vigilante hacker story line, then I do recommend this show.

Also, I'm a big fan of all the shows you mentioned (happy to see Le Bureau des Légendes get some love), and also a big fan of this one, so take that as you will.

I think the struggle with a lot of people is that while the show starts off as a vigilante hacker story, it starts to focus more on the psychology of the main character, which some people enjoyed less.

The final season is fantastic and the show has probably one of the most satisfying endings I've ever seen.