I think you misunderstand it he said:
Sentence1: "Earlier today I mentioned I'd test 1080p 23.976. It does indeed send the proper signal to my projector. I played a blu-ray for a couple of minutes and it looked fine, though there was little movement so it was hard to tell if it was "right"."
-which tells me that it is ok, however the movie he was watching did't have quick movements
Sentence2: "I then tried a DVD, but this had noticeable frame skips."
-which tells me that the DVD was either PAL or NTSC was having some noticeable frame skip as it was shown in 24Hz (instead of 50Hz for PAL or 60Hz for NTSC), therefore the inverse pull-down (or whatever it is called) was not perfect.
The question for me: What if it is set to auto? What will happen with PAL DVD, NTSC DVD or 24pmkv content?
It seems to me that you don't want to buy it and trying to find excuses why not to buy it but I try to find reasons to buy it.
But anyway let's wait if someone will do a full test on these, don't judge before it is proven.