I’ve seen his writing about a certain Gemara that “no doubt” came from eastern folklore and they just changed the names. Rachmana Litzlan.
These scholiars look for anything with a similar pattern and claim them to be one and the same. It is easy to get fooled, if you don’t think broader. Some patterns are very easy to create. It is similar to how they debunk psychic readings, that anyone has doubts about this or that. And anyone will succeed in someway someday.