Alzheimer’s is difficult to diagnose in the early stages and only really diagnosable with autopsy. It is thus easy to assert it and use as evidence his tweets that leftists consider to be demented because they are effective and are not the sort of tweets sane i.e. Leftists would send.
Those leftist assiwpes aren’t intelligent enough to know that.
My mom just recently died of Alzheimer’s and yes, there is no test other than postpartum to confirm it.