Having seen laptops with dedicated copy/paste/undo/redo keys, I think Apple can be forgiven for not going down the function key rabbit hole: https://pomelo.shockfox.net/pub/img/powerlite.jpg
(Yes, they could have just replaced the "regular" function keys with copy/paste keys, but I feel like that would have gone over about as well as the various times they've, uh, tried to replace the function keys)
The least they could have done was print "Copy", "Paste", etc. on the keys that we now use for those tasks.