What an untrue statement. There is nothing subpar about it the M4 Pro’s. No defects either.
I have owned all the 12.9 previous Pro’s and the M4 is way better than any of them. There is no comparison. No way could I go backwards now, as too big of a decrease going to an older Pro over the M4. I have tested both the glossy oled screen and nano and liked them both. Kept the nano, but would be fine with either.
Gave the glossy oled to my 81 old dad, who was using a 4th generation iPad Pro 12.9 and he loves the glossy oled M4 13 Pro. He said reading text on it is so much crisper and much brighter/better colors.
OP - do OLED TV’s do the same to your eyes?