I like a lot of Boom Bap Hip Hop, but it's a dated sound. Still, you wouldn't catch me saying it didn't age well. There's a large sector of people who consider that music ancient and would claim it didn't age well simply because they don't like it and never really rocked with it like that. If someone posted that Gangstarr's "Mass Appeal" was garbage, they'd get roasted.
My point is there's a HUGE double standard on this board and ANYTHING commercial specifically music from 1997- present is low hanging fruit for posters to dismiss as trendy or didn't age well. Flat and shallow argument as Boom Bap was trendy as well. Same as G Funk and a lot of styles. Did classics come out of them? Certainly, but it doesn't change the fact. Even further is this, people claim Jay Z worked with trendy producers. Pretty much every producer he worked with was trendy, which includes Premo (who is a Top 5 Hip Hop producer). There was a point where he was every major East Coast release. Then after 2001, that changed.