>>51801120I grew up with RBY and as an adult now, I don't consider those games the "peak". They're nostalgic but also broken as fuck and difficult to replay.
To me, the definition of peak has more to do with quality. In that respect, that's why I consider HGSS/Plat/BW2 to be the best overall in terms of enjoyment, content, and so forth.
It's fine to like XY or SwSh. But I think that XY fans are primarily people who played them as a child, and might dismiss any gen beforehead (not just 5).