This place has a wider audience than most (all?) domain-specific forums I've been a part of. Given a scale of 1- 10, 10 meaning expert and 1 meaning complete novice, most boards attract people in the 7-10 range, whereas this one covers the whole scale. It's odd to see a post on an audio board from someone who's just got their first stereo - not so odd to see people in their first week of vaping in here.
Given such a diverse population and extremes of competency, it prolly makes sense to moderate actively. Does that result in throwing the baby out with the bath water occasionally and downing some benign threads? Yup. But imagine the alternative.
Erring on the side of caution, IMHO, is better than erring on the side of adding friction, whether it's disrespectful comments, bad advice, or obfuscation of help due to meandering (which, admittedly, is the grayest area).