As a working adult... I wouldn't even know the names of any modern custom ROMS.
And there are psychos like me that changed their custom ROM in the work... Ahh, that thrill to mess it up and lose your device for several hours until getting home.
Same here. It doesn't worth the time to set it up and the risk to brick my phone anymore. There are many nice launcher apps to fully customize the interface now, and I don't really care to improve resource and battery consumption. The only reason I still root my phones is to remove bloatware. I don't even need Adaway anymore since there is Blokada and Firefox + uBlock.
As much as I like blokada (and in a similar vein DuckDuckGo's app tracking protection), I run an always on VPN so these are a non-starter for me, unless I get up off my ass and set up a layered VPN setup on my home server. AdAway is too simple once you get past rooting.