This isn't about handwashing stuff that should be handwashed. It's about handwashing stuff that would genuinely be better washed in a machine, to get rid of sweat/bacteria/fungus/ general minginess. Why would you handwash stuff like that?
My mum (aged 70 this year) is queen of household martyrdom. With an injured-Cinderella air, she was berating me over the phone this morning for not handwashing my husband's shirts. Or his socks. Or ... his undies. Apparently the youth of today just wreck things and then throw them out and buy more, and proper housekeeping involves not wrecking everything. And you're not supposed to wreck your hands by washing in hot water, either.
To me, 20 year old shirts with multi-year sweat stains, are far worse than 10 year old clean shirts that have slightly frayed collars due to having been washed in the machine. Am I really being obnoxiously profligate by washing undies at 95 in the machine (on the eco cycle) and buying another 10-pack from M&S five years later?