More than whatever process was used, just looking at his user page I do think some sort of ostracism-like response was inevitable. The thing about communities like Wikipedia is when you have a group of volunteers coming together to do something the culture has to be somewhat intolerant of cultural change, otherwise it'll fall apart pretty quickly. To repeat that another way, culture defines who is part of the in- and out-group, so once the group has formed it is very slow to change or the group collapses.

I quite like what he's going for with these 9 theses - the ideas of the public rating articles or enabling competition between articles seems like a clever compromise position - but frankly I don't see how the Wikipedia community could treat this as anything other than an attack whether or not the ideas are improvements. The parallel with Martin Luther and the Catholic Church was appropriately foreshadowed by Sanger.

Organisations eventually become corrupt. Wikipedia might already be there or it might have a ways to go, who knows. But this sort of change might require a new project or some sort of schism among the Wikipedia editors, it sounds pretty radical. Especially in the post-Trump era; I expect his presidency has been a traumatic era for the English Wikipedia project.