Eh, personally I’ve noticed it in every review/set of photos. I’m just too lazy to do screenshots and post them. Only time I’ve seen the heads look in scale is with InArts own videos, like the recent “how to futz your Joker” video they did. And that is because their videos are all showing off the prototypes, not the actual final production figures (at least there was no mention in the video that I saw of it being a production piece).
Also, if it was simply a case of lens distortion or something else with Justin’s videos then one might expect to notice the same problem with many if not most of the figures he reviews, which I know I certainly haven’t.
I guess most people don’t seem to notice, but I personally don’t consider it a minor nitpick for figures in this price range. Btw another “grail” figure with a massive bobble head, one I used to own, was the Hot Toys Tarkin. But I’ve hardly ever seen that complaint come up online. But compare that final product to the original prototype photos and you’ll never unsee it.