This blows my mind, I remember when they announced the feature and it does not seem like nearly 10 years ago. Guess I’m older than I think!

If I had to guess for Mac I’d say 5 years max. No idea about KDE

While wearing a mask is never a bad idea, it is absolutely not necessary to not get sick. I am also immunocompromised and I have stopped wearing a mask. I wash my hands very often and never eat handheld food without washing first. Zero issues since getting covid back when I was wearing a mask religiously.