I think it goes both ways.
For some, Classic is a litany of testimonies against the problems Retail has, and admitting that you're happy people are playing Classic means some people have to admit that their choice has faults that drove them away.
Conversely, Retail's quality of life changes and overall polish both mechanically and visually are a testimony against the problems Classic has, and admitting that you're happy people are playing Retail means some people have to admit that their choice has faults that keep them away.
TLDR; "You're not allowed to be as happy as me, you're not on my side!"