I dunno who says that nowadays unless they are using shit quality mp3s which have been badly ripped from someones dirty vinyl collection. ;)
Only thing I have ever said in relation to some digital mixes is that the bass is lacking and the highs are too sharp. Which can be fixed if the DJ bother his ass or cant be left alone if he doesnt give a **** about what I say ;)
Anyway. As sunil said. If its broke dont fix it. I enjoy buying vinyls and playing them as they tend to sound better than a random collection of songs, at varying bitrates ripped from soulseek and mixed in abelton. You see. If its a load of highquality MP3S mixed on abelton with a decent soundcard there is no problem for me (and for Sunil)
The way i see it in the 90s you could have shite djs but the sound coming off the record most likley gonna be prety good.
Now you have some shite djs not caring about the sound quality of what they play coming out of the onboard soundcard of a dell laptop (i have lots of experience of this). Thats were some of us get annoyed.