They're reaching. Really, really reaching. So he does something 10 times instead of 9 and something else 8 times instead of 6 during speeches.
I'll admit he's not as cognitively sharp today as he was in 2016 but he's far from all that different. The authors desperately are trying to create the same narrative that we know exists for Biden. Baron's rules 1, 2, 3 and 16 are on full display in this article.