I think going by overall mainstream appeal and zeitgeist it's correct. Everybody was talking about BG3 that year, even people who are usually not fans of the genre. So in that sense I agree that 2023 was the year of BG3.
On the games' merit alone as standalone pieces of art abstracted from context I think Alan Wake 2 puts up a good fight.
I love Lucas Pope and would like to one day play Mars After Midnight, but I'm not paying over 200 bucks for one of these anytime soon.