sechel, we’ve dealt with the 7 mitzvos topic at length in the past. The Rambam does NOT say that we have to teach goyim the 7 mitvos. He writes that Hashem told Moshe Rabbeinu to ‘force’ all of non-Jewish humanity to keep the mitvos that Bnei Noach were commanded, and that if they don’t they are to be executed! So all the meforshim agree that it doesn’t apply to times when the goyim are not under the control of Bnei Yisroel. Furthermore, there are criteria that must be met in order for the non-Jew to be considered adhering to the mitvos of Bnei Noach, and merely doing it out of morality is meaningless. As I wrote, we have discussed this at length in the past.
As Kol Yisrael areivim, if it means that we have to go out and get non-frum people to put on tefillin etc, why did not of the preceding Lubavicher Rebbes tell t cheir hassidim to do so? And why is tefillin more important than any other mitzvah? Why not informing people that they are not allowed to have tattoos, or any other of the many mitzvos that they unfortunately do not fulfill?