It's not surprising that those kinds of outlooks towards GMs & internalized player frustrations not quite targeted at anything are more common than they were in editions past. Sure there were folks who might express frustrations of being burned, but they tended to be outliers.
I think that 5e does a lot to encourage adoption of that mindset through the way it sets the default for so many
dials to 11 or close & then just packages it in rulings not rules while throwing it to the GM with "you can houserule it". Houserules tended to be a mix of restrictions benefits nerfs & buffs over baseline RAW in the past & it was easier to view it as neutral at worst if "
yea $X change is a bit of a pinch but $Y-change is awesome" seems a bit too far... That's quite different from "
wow.. all of these are basically nerfs" & it's even worse if the player viewing those changes as nerfs lack experience with other editions or systems where the kinds of gameplay where those new "nerfed" baselines can be fun