For life changing decitions people should wait until the study has been replicated a few times, and preferabely destiled to a general advice by the FDA or whoever is in charge.
Isolated papers are better than blogpost in allcaps, but they are not "setled" science.
The problem is that the press release of the universities and the report by science "journalism" present these single paper result as a definitive result.
“In people with hearing loss,” the authors wrote, “hearing aid use is associated with a risk of dementia of a similar level to that of people without hearing loss.” They proposed “up to 8% of dementia cases could be prevented with proper hearing loss management.
From the article, describing the replication work which led to its retraction:
Mur and his colleagues intended to build on the article with a related analysis on the same UK Biobank data. But when he couldn’t replicate the main findings, Mur scrutinized the paper more deeply. [...] Most notably, he found that hearing aid use did not correspond to a lower rate of dementia for people with hearing loss, as the authors reported. He found the opposite: among people with hearing loss, the dementia rate was higher for those using hearing aids.