I mean if all the people that voted last primary voted basically the same you have some sort of control group, the only significant delta in that primary was a huge group of very elderly people that don't vote in the primaries except this time that showed up after they were targeted for a hilariously false campaign with Isreali AIPAC money.

If the control group changed as well I'd agree with you, but the delta here was basically a huge group of demented people that were specifically targeted to show up in a one-off. It's hardly just disingenuously brushed away as some "other people" that just changed their mind after labeling the other guy's opinion as propaganda because they disagreed.