Thank you. Definitely needed to be said. I get tired of scrolling on past. I need to use 'mute' & 'block' more' - but even if out of my sight, there's someone reading their rubbish. Which does worry me because, as you say, they present any old rubbish like they're accurately stating info found in medical journals.
People need to learn the difference between fact and opinion - and stop presenting the latter with such arrogance they appear to be truth stated confidently.
It's dangerous.