>>49695104
Personally it was a secondary -> primary shift. Wanking requires no prior knowledge, maybe some surface level info. But actually getting into 2hu made lots of lewd stuff feel out of character at best and trashy at worst. Yeah they're good looking girls, but sex appeal isn't the main draw anymore now that I can peruse decades of non-h works. Like what >>49695021 said about keeping things separate.
Besides that, I don't think hornyposting is a good metric since it's easy to fall back to when other discussion dries up.