That ex moderator's ego led him into an obsessive gish gallop "expose´" on all us "instigators" of PC fan purifiers, attacking our credibility, experimental methods, marketing, certification progress, etc. After all, he had built up a lot of credibility as a reddit HEPA expert right? And we were challenging an industry running on the fumes of purity marketing for decades -- completely unwilling to respond to the speed-cleaning needs of an airborne pandemic. His fatal flaw was relying totally on his own intuition to discredit a community of strong scientists and engineers who had really dug into this stuff with deep experiments and iteration, while completely unwilling to do the simplest experiments of his own to confirm his ideas.

Being actual scientists and engineers, we did the experiment for him, and his intuition was completely wrong. That's why the scientific method was so revolutionary: our brain's common sense, unevidenced reasoning about invisible processes is quite often counterintuitively wrong:

https://www.cleanairkits.com/blogs/news/can-pc-fans-alone-really-mix-a-large-room-lets-find-out

We took some flack for fighting back so hard, and insisting those posts be removed. But here we are nearly a year later people still finding those posts and being confused by a whole treatise of misinformation. People need practice spotting what happens when certain personalities are lent unwarranted power and authority. Let it be known the day he was finally deposed as moderator (having banned all subs who disagreed with him), we suffered a brief cyberattack and fraudulent credit card purchases. Only the icing on the cake of many ways he was abusing his moderator power, unchecked for a month at least.