Now that's a strange rant. Not everyone who wants to download Youtube files to MP3 is downloading electronic dance music for the purpose of playing it live as a DJ.

In my personal case, it tends to be relatively obscure classical music. Due to the "nature of the genre" there are quite a number of pieces that have never been studio recorded and exist only in OTA radio recordings, or are only available on long out-of-print vinyl, sometimes from foreign sources.

I honestly tend to prefer other sources other than Youtube personally and will only plunk from there as a last resort (Youtube is a place that is more "perishable" than others, which is why I Youtube-DL instead of just relying on the stream), but Youtube has attracted some curators of recordings of this sort.