[tallies]

For some data, here's a rough number of Vaporwave albums released per year (source: RYM[1])

2010: 11

2011: 63

2012: 168

2013: 348

2014: 572

2015: 1193

2016: 1144

2017: 812

2018: 816

2019: 798

2020: 732

2021: 269

[1]https://rateyourmusic.com/genre/vaporwave/

[tarsinge]

The classic Vaporwave tag may be on the decline because there are many offshoots, and also the sound and aesthetics are absorbed in other genres.

[scottmcdot]

I would say Chillwave peaked around 2009. I was at uni when I was listening to it and I feel to old to "get into" it now.

[slfnflctd]

You are never too old to get back into music you enjoyed when you were younger, if it was any good to begin with.

The only stuff I've found I can't go back to in the long run is the dreck-- the low quality, overly derivative or ethically questionable non-art. Everything else can fly again after you get over being burnt out on it. [That is, unless you grew up in the age of radio dominance, in which case there are probably several good songs that've been killed for you forever through overplaying.]