A poor generalization. (Presumes a decent chunk of users who come here could be considered fans.) Mentions graphical issues here quite frequently. Ran into save corruption issues for a handful of people. Remembers the same RNG for online battles. Complained about the lack of postgame. Terastallizes Pokemon on the first possible turn, as well as saving them for last. Only covers (some of) the things surrounding Scarlet/Violet. Can still have fun, despite all that.
For other generations: Lots of negativity for BDSP (often on looks, sometimes on not being Platinum), Sword/Shield's trees, Dynamax, Sun/Moon's tutorials, the power of Z-moves, X/Y's Elite Four and general ease, the power of Megas, and so on.
Suspects harsher criticism of newer games, honestly. (And a small honeymoon period too, in fairness.) Fades as the memory grows more distant. Often views older games with some rose-colored glasses. Like...have you tried to go back and play Generation 1? Replayed it. Contains limited inventory, a few weird sprites, no (good) Experience Share, tons of low-level and repetitive trainers, how unbalanced Psychic is, poor move options for some Pokemon, taking Counter damage from a different battle, Wrap+Toxic stuff, using HMs from the menu, no Move Deleter, the grind for Porygon, and plenty more. Could come up with things for other old games too. Do people often remember that, or the fun they had? Seems to be the latter. (Did not say they still cannot be fun. Certainly can be, despite all that, just like Scarlet/Violet.)
Mentions some possible first-game bias in play too. Ran a poll (before the Scarlet/Violet DLC): "Is the first Pokemon game that you completed also your favorite Pokemon game?" Split 6 Yes and 11 No. Is that a big sample size? No. Expects a smaller Yes vote, though, given nine generations of games.
Some other indications:
Favorite and least favorite generation. Answered Generation 4 or 5 as the favorite quite a bit.
Best and Worst Things about the SV DLC. Clearly identifies some flaws.
Scarlet/Violet ratings (pre-DLC). Some high numbers, some low numbers.