eh paramore isn't really a good comparison because there's always been other major creative forces besides hayley (for the last decade taylor has been just as key to the band as her) & then even the hayley solo albums still strangely had taylor heavily involved everywhere.
the first years & years album had everything credited to the three of them + a few other producers they worked with, but the second album, while they were still a 'band' only had the other two co-write/produce two tracks (one of which was a bonus track), with the other tracks all just being credited to olly + a wider range of pop producers. those two 'band' tracks were among the most reminiscent of the debut's house-pop sound too, he tried to branch out away from that sound on a lot of tracks but the further away he got the worse the results were. & now of course it's officially a solo project. it's definitely an awkward transition where the second album was a creative shift to being nearly an olly solo album but they didn't commit to that then & now he's sticking with the name even though he's already very famous under his real name. one of the original years & years guys is still in the touring band apparently though, just no creative involvement anymore?
― ufo, Tuesday, 4 January 2022 01:50 (two years ago) link