I like D_RUNIN, but I was never an active PWAD player back in the 90th.
I imagine there are 3 types of dislikes:
People who genuinely dont enjoy listening to the track while they play Doom II. Maybe some of them genuinely dislike listening to Bobby Prince music while they play Doom II, maybe not, who knows, but somehow I doubt they are very vocal about their dislike.
People who played a lot of 1-level PWADs in the 90th. They may have played Master Levels, which gave them a bit of D_RUNNING disorder, and then some of them took Maximum Doom for a spin (it was on the same CD, right?) which made the disorder incurable. I think they might share some of their pain with D_RUNNIN when asked about it, but have something better to do normally.
Bandwagon fellows of type that believe it is "cool" when you are vocal about your dislike of something, which is not, let's say, outright apparently that bad and of type that belive it is "cool" for a "true" oldtimer doomer to have dislike of D_RUNNIN, depite never having suffered from the disorder mentioned. Now "coolness" needs diligent cultivation, so I would expect this type to be the major source of buzzing about how bad the track (supposedly) is.
EDIT: As I mentioned, I like D_RUNNIN, but I also like some diversity to the soundtrack:
https://youtube.com/watch?v=ZuvGP-1B6pk
