This is a barrier to achdus which noone else has to deal with until they come along.
Do you really think your incessant ranting will increase achdus?
I do know some Lubavicher chassidim, and I don’t get the impression that they’re particularly arrogant. Yes they do think their ways are correct. I don’t have a problem with that per se, except for the parts that have veered from normative Judaism.
I don’t know about “holier”, but they do probably have the best nigunim.