Generally this is very true, for the masses. For my circle of friends, those I write about and who inspire me, this absolutely not the case. I think it depends on so many factors, and whether we buy into the vicious lies of ageism. I don’t, neither do my friends, which is why, for example, one of them at 67 just got her Rescue Diver certificate and her IFR flight rating.
Age has nothing to do with it. To your point, thoughts and attitudes. I have no time for the bullshit stories around aging. I’m too busy proving the pundits wrong.