You have a point about ageism, but you also make quite a condescending mistake of your own. You could have say "less tech savvy" than "dumber than average". It

You have a point about ageism, but you also make quite a condescending mistake of your own. You could have say "less tech savvy" than "dumber than average". It is not because you don't master something that you did not use before that you are dumb.