YeeHawShow 'bandwagon mentality'? Are you saying that ALL negative feedback should just be discarded because of some secret hate for new maps?
He isn't. He's saying that you can't just play a map once or twice and decide it's bad; a map needs constant feedback, adjustments to it from that feedback, and then retesting when that feedback is implemented.
Also, just saying "map bad" isn't good feedback. You know what is good feedback? "This Second is way too easy to hold. Try moving around the high ground." "Hey, there's a broken sniper sightline over here." "This choke needs to be widened to be pushed out of." This is negative feedback, but it's constructive and isn't just circlejerking.