I think this spectrum shows the issues with that though. Take the last one, the pen pot. You truly have to _learn_ what that means. Pen pots aren't a thing that most people are familiar with (I've never used one, I don't think my parents generation did mostly either), and there's little explanation of what it is.

Move up just one previous, and you've got a good looking illustration still, the pen and paper, but now a) everyone knows what a pen and paper look like, b) it literally says the name of the app, and c) the yellow colour scheme distinguishes it well when scanning many icons. It's clearly more accessible to new users, existing users, young and old users, and in terms of illustration quality, seems pretty subjective as to whether it's better or worse than the last one.

I'm not a Mac user, but ever since Google changed their icons a couple years back I still struggle to tell apart Maps/Photos/Drive etc at a glance.

I am basically icon blind thanks to a couple decades of icon churn