Considering they identified one of the issues as designing themselves into a thermal corner and the next thing they do is design the iMac Pro with extreme therm

Considering they identified one of the issues as designing themselves into a thermal corner and the next thing they do is design the iMac Pro with extreme thermal constraints too I'd be skeptical if they had learnt anything. Modern Apple doesn't backtrack lightly, just look how they're still pushing the butterfly keyboard despite it being breakable with single specks of dust.