I can't say I really had any major issue with load times this gen. I would have much rather have more power added to the consoles or in Sony's case use the money to focus on hardware based backwards compatibility.
I feel like this push to custom SSDs will only affect 1st party games and big publishers like Ubi, Activison, and EA. Many of the games I play are Jrpgs which are decades behind when it comes to this kind of stuff.
I guess they need a new gimmick to sell and 8K is basically off the table outside of simple games.
So SW, are the SSDs and decreased load times a real game changer for you?