LogFAQs > #975484347

Maybe it's a playerbase thing too.
Sometimes it's less what you're going back to, but the kind of environment you're going back to.

Like Fallout New Vegas fans are a fun bunch who still make a bunch of videos, so you can get back into the mood by checking in. They even find new stuff every now and then. I didn't know Lanius had a unique line if you run up to him dressed in Legion armor until recently.

Meanwhile, Souls' following is split across a bunch of different games and most of them are spouting the same done-to-death recurring phrases. Or arguing about the rules of online pvp. Or they're casuals who heard Elden Ring was the place to be.
That sort of thing shouldn't affect the quality of the game, but it's a dark could over the game that doesn't help you generate the interest to go back to it.