Who said this?

Background: it is a critique of Chabad seeking to put Tefillin on soldiers, or any Yidden who haven’t worn them on that day …

“I’m only saying this, because this [putting on tefillin] became a fad.
The frauds and the evil ones’ have attached themselves to this particular mitzvah to advertise to the world, “I’m wearing Tefillin.”
I don’t believe any of this [that this made anyone frum], and even if it should be true, …..
Shabsai Tzvi made Baalei Teshuves in the tens of thousands …
It is brought down from the books of Reb Yaakov M’emdin and others, that there were Jews that distributed their total wealth and went to Shul to learn and they said “Moshiach is already here” and they did Teshuvah!