These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Crosses the Line Twice: "Those drawings are as bad as my little sister's.' And my little sister is DEAD! I KILLED her because her drawings SUCKED!"
Sebastian as the Joker cutting someone's fingers off... and replacing them with sausages.
Crowning Music of Awesome: Many different kinds of music are used during his episodes, which always leads to commenters asking "What is the music from this part from?" Fortunately, nowadays the music shows up in the credits.
Ensemble Darkhorse: Since he started to appear in the videos, Seb has become just as popular as Fred, if not more.
"Funny Aneurysm" Moment: Sort of. In the Raid 2020 review, the Joueur du Grenier makes fun of the game catchphrase ("Winner fight drugs") by showing a photograph of Lance Armstrong while saying "except him". Armstrong was stripped of his winning titles on the Tour de France (because of doping and after a very long suspicion) a few weeks after the release of the video.
Gateway Series: His original intention for making the show, because he wanted to introduce more people to AVGN and the kind. So far, it seems like he's succeeded as long as the French are concerned.
Hate Dumb: There is a very aggressive Vocal Minority of JdG fans who definitively hate the newer formula with the cameos NESBlog cameos (especially because of those cameos). They still watch the episodes released since this change, but systematically complain about how it isn't funny anymore, how it was better before, how a cameo lasting a few seconds ruined the whole video.
They Changed It, Now It Sucks: The Zelda-themed Papy Grenier received a lot of criticisms from fans because, instead of being still the old Papy Grenier telling a story, it is a fake reportage broadcasted on television.
They Copied It, So It Sucks: When his first videos appeared, many viewers accused him of being an AVGN knockoff. It didn't help he copied a bit too much of Rolfe's trademarks... but now he has Grown the Beard (not literally, he already has one) and many French gamers prefer him over AVGN (and that doesn't include the language barrier).
It's worth mentioning that at first he made sure not to review games already reviewed by Rolfe, a decision that has helped him avoid this trope for the most part. So far, the games he reviewed that Rolfe had reviewed before are justified by being as infamous in France as they were in the US back in the day. An exception is The Legend of Zelda: Faces of Evil, which was highly requested by the viewers. While reviewing these games, he avoided the issues Rolfe had covered as much as he could (the fact that AVGN didn't get too far in some of these games helped a lot, since JdG had a lot to say about these games' later levels). Also, some of the more obscure games (like Dark Castle and Barbie) were reviewed by JdG long before AVGN got to them.