Don't get me wrong, Nigel's skills are hugely impressive. But I feel this AI talk was more pandering to the current hype than and actual claim that he was better than a computer solver.
Definitely helps.
> Nigel extended ZAP to ZAPATEADOS
My problem is I try to extend the word rather than create new words. So I'd look for zapped, unzapped, zapping, etc. Actually, if I had 'ATEADOS', I would waste my time looking for a 7 letter word ending in S.
> Nigel placed all of his letters between the P and TED, spelling out PERNOCTATED and turning NON into ANON. The play tallied 92 points.
Now that is genuinely impressive.
I wish scrabble had platforms as widely available and free as chess does.