The linked article cites a study which found older users to be more vulnerable (at least, they shared more false news stories.) The study controlled for politic

The linked article cites a study which found older users to be more vulnerable (at least, they shared more false news stories.) The study controlled for political affiliation (because most of the fake stories were pro conservative.) While the GP's thoughts may be anecdotal, the study is not. Whether or not that makes you "uncomfortable" is irrelevant. Have you found issues with the study in question?