If we are to take into consideration what happens after a messianic candidate dies, then the claim is unfalsifiable. It can literally be said of anyone who claims to be a dead messiah. It got worse when he was around, got better when he passed away, but that only falls in line with him being moshiach? When the torah, yeshiva worlds growth had zero to do with him? When the sefardim BTs likewise have nothing to do with him? He laid the groundwork for the mitzvah vans and tefillin putter-oners who contribute very little if anything to frumkeit overall, snd we’re talking about klal yisroel, not one jew doing something which you think strengthens his non existent connection to something he doesn’t even know about.
The rambam doesn’t say moshiach will strengthen a connection of ofherwise frei jews to yiddishkeit, it says he will force or bring them back to Torah – the Torah as a whole, not crumbs here and there. And that didn’t happen in the Lubavitcher rebbes time, nor is it happening now; 85% of Jewry is still not frum, the BT movement severely slowed down except among sefardim, and the main reaskn the numbers of frum jews are growing is because of having babies, not BTs and gerim…the latter basically nake up for rhe OTDs, which while we’re on that subject, shouldn’t no one go OTD in the messianic era?