ARSo, not only is it accepted, but such lacking people are,as noted here, sometimes promoted to positions of communally leadership and representation of chabad abroad, something unthinkable in other circles. Even modern Orthodox rebbetzins dress according to halacha nowadays, as far as i know.
I’d also add to your point about letting everyone do things on their own level – I’ve heard as a knee-jerk reaction from supposedly anti-messianic people that the reason why they don’t come out in a ma’aracha, full blown opposition to the messianics is because “there’s enough division in klal yisroel as it is.” This empty line seems rehearsed and inculcated, but aside from its disingenuousness, it also speaks to how much neo-chabad will admit to the chaos in its camp, where no rules are set in stone and you practically have to be Shmuely boteach to get any kind of reprimand….or maybe he’s ok now too; who knows.