Not just Dr. Alkon, but other independent, peer-reviewed studies show the false narrative of the amyloid plaque theory:
A study by professor Clive Homes published in the Lancet supports the criticism of the amyloid hypothesis. Homes found, during autopsies of dementia patients who'd undergone treatment for the removal of amyloid plaque, that while some had virtually complete plaque removal, seven of the eight still died with severe end-stage dementia. "In the whole cohort," Homes wrote, "there was no evidence of improved survival or of an improvement in the time to severe dementia" versus the placebo group.