“he did not hold cheese produced with microbial media to be cheese in the traditional understanding, since microbial coagulant did not exist at the time of the Shulchan Aruch. He said it is a different product, so the gezerah was not applicable to it”
My rav told he that Rav Soloveitchik z’tz’l ate such cheese. My rav doesn’t accept Tablet K for other reasons, not this one.