I refer you to my post upthread.I Googled Jewish complaints about lich phylactery and found a bunch of Jews saying exactly what I am saying. And a few non-jews saying it was antisemitic.
This just isn't a thing in the Jewish community. There might be a few outliers, but it's not offensive to Jews in general.
This one is the 7th result on my Google query: Dungeons & Dragons Has an Antisemitism Problem - Hey Alma
As I posted, I don't know how representative these views are. But I don't think it's true to say they're not there.