What are you talking about? RDR2, apart from the online (it can't compete with GTA online DUH) was a massive success, and Cyberpunk while it flopped at launch seems to have been redeemed by that anime and the DLC. I don't see at all how these two exemplify your point.
I think he's trying to say.
"Cyberpunk 2077 was a super hyped follow up from the smash hit Witcher 3 studio - then the game came and and was dogshit. People will be much more wary on the next game from that studio."
"GTA5 was super hyped up from the smash hit GTA studio - then the game came out and wasn't as fun, as funny, or as good as previous titles. People (who don't care about GTA Online) will be much more wary about GTA6 then they were about GTA5 as a result."
"Red Dead Redemption 2 was a super hyped up sequel to RDR - then the game came out and was 20 hours of solid game in a 100 hour wrapper. People will be much more wary about RDR3 then they were about RDR2".
GTA5, RDR2, and CP77 all (partially) succeeded on the momentum of previously successful titles that the new sequels aren't going to have as much of. CP77 was a disaster and the general feeling of GTA5/RDR2 is "a whole lot of game but not a whole lot of fun".
RDR3 is far away but GTA6 is already expressly stated to be "more culturally sensitive", "having a female protagonist" - on top of following several key Rockstar departures (Houser, Lazlow) and the
terrible release of the GTA Trilogy from 2021 is going to have a lot of people waiting to see if it's any good.
If that's what he's saying - I agree. I don't think either game will "flop" but I don't think they're going to eclipse GTA5/GTAOnline's success by any reasonable measure unless there's a sudden reveal or indication the game is going to be good.