>>46100331SM is probably one of the least memorable games in my opinion. The soundtrack and locales were all very samey, with the only outliers being places like Konikoni or Malie.
The only reason people seem to remember it is because it overexplains the same things over and over without actually advancing the plot. XY had better pacing and we all know how bad that was, but at least Kalos was interesting enough and was fleshed out enough beyond shock value.
USUM is pitifully easy aside from one or two casual filters, Totem Lurantis somehow felt easier in base SM. Hapu was nerfed, and the aforementioned casual filters are literally just in the trainer's school and U-Necrozma, the latter of which forces you to cheese or stall it either way.
Gen 7 in total was just missed potential, the hype season ended up being more enjoyable because the game doesn't give the player any agency at all. Mechanically the game was a complete downgrade from Gen 6.