I'm also tall and do not need them to look taller, but they definitely improve my posture a bit. That said, I wear them extremely rarely. Even in non covid times, I mainly go out in London and there is a lot of walking involved for me to get there, trains, changing stations, tube. If we ever go to a restaurant where one of us can drive, I might wear them again.
I also think it's a pendulum and they will come back. Years ago the thing was ballet flats and how bad they were for your feet, so a bit of a heel was better blah blah. Now it's flats only.
I never have been able to walk in the huge heels anyway, so I wouldn't notice if they were in or out, as they are and have always been Not For The Likes Of Me!