besalel:
Your points about Uman, Rebbe-worship and zeman-Shabbos all relate to Chassidus, which holds itself to be different from traditional orthodox Judaism. This does not mean that they are correct, but this does make their practices not relevant here.
One very big difference between Chassidus and MO, in addition to what I posted above, is that, for example, spending thousands of dollars and traveling thousands of miles to Uman is obviously not an attempt to dilute orthodoxy or to change it to Nationalism=A”Z. Ditto the Rebbe-related hanhagos, including, for example, Chabad Chassidim flying in before a wedding to pray by Rabbi Schneerson’s grave. I am aware of what the gedolim have said about Chabad, but that is not the point here.
The point is that, unlike MO, chassidus is not an attempt to dilute orthodoxy and morph it into an unholy hybrid of Torah and, lihavdil, secular nationalism (which is A”Z as per even Rabbi JB Soloveitchik’s own father as well as Rav Elchonon, et al.)