I just feel like people have turned a blind eye to 40 years of toy history simply based on the almost perverse way people praise the MonsterArts.
I honestly don't see why people go on about the 'amost perverse' way people praise the Monsterarts. I'm not sure about ClubTokyo due to its closed doors policy, but folks in sites like Skullbrain or even here you see equal praise for figures of other lines, especially Marmit and X-plus. You can't tell me the praise for, say, MA Spacegodzilla, hasn;t been as extreme as the Gigabrain Ghidorah, or most of the more popular marmits like the Gigan back when they were new. In addition, most of the Monsterarts collectors here do appreciete the other lines, and those that don't are traditionally collectors of SA lines in general like Figma, Revoltech and Figurarts only (like those in TFW2005).
There's also the bit where Marmit and M1 are stylized, who that automatically turns a fair number of people off. Bandai is also generalised as 'kid's toy', so some colelctors who only collect adult collectibles ignore it. Of course, in the long run, Bandais will outlast and be more popular than MAs, but then I don't see your point. Are MAs too popular or not popular enough?