So many points to address… I’ll try to get to some of them.
Mitzvos are רצונו יתברך. I haven’t heard otherwise
I wouldn’t have expected you to, but the clear message I’ve gotten from the Lubavicher people I know is that their kavana when doing mitzvos is to please the Rebbe and bring Moshiach. Of course, if you would ask if it’s Hashem’s ratzon, the answer would be yes, but you seem to misunderstand my objection as being against moshiach, ch”v, buy it’s not; it’s against the unhealthy focus.