I'm often curious as to who, if anyone, shows up to the services of these groups aside from the "bishops" or "priests."
I know of a half handful of these groups that also operate homeless shelters and soup kitchens, which buys them a lot of goodwill with their constituent communities, who in turn will attend an occasional service. Even then, most of the congregations are small.
My assumption is that those few “churches” are the exception and not the rule, but I find it hard to harbor ill-will against anyone — no matter how misguided their ideas about Orthodoxy — if they are feeding and clothing the poor. Broken clock being right twice a day and all that.