Its getting downvoted because its using weasel words to make a non-falsifiable statement, which is annoying rhetorically. Depending on which side you are on, you can either claim there are other fields the opponent just haven't thought of, or you can claim that a specific mentioned field isn't a "real" field (e.g. flat earthers would fit, but i don't think that is the sort of thing that is meant)

By definition, the replication crisis wouldn't apply, since it is a crisis because people in those fields are asking the question. Hence those fields would not qualify for the grandparents point.