Well now... do consider how many thirty year olds passed all of the covid-hysteria years in their parents' basements, inducing unmentionable manual stress disorders while watching porn. Or, for the more socially acceptable version, imagine how many younguns are suffering from carpal texting disorder in their grotesquely overused thumbs. Our bodies just weren't designed to endure the kind of minutely limited-range, repetitive-motion abuse we're now demanding of them. As for the forty year olds, the internet wasn't much when they were coming of age, so I think your vax inference is probably dead on [pun regretfully intended].

— Christophe