I particularly lament that scroll bars have become a lost art. We have gone from scroll bars working perfectly in windows 3.1, to .. whatever passes for a scrollbar these days.
Often they are even hidden, so you have no idea how big the document is,or where you are in it. But it sure does look minimal and slick, until you have to actually use the thing. Many established keyboard shortcuts are going missing,but that is OK, since modern people dont like keyboards.
My favorite is when installing current windows 10, when you select language and country. You get a list that displays .. 4 items at a time, from hundreds of choices. Unlike earlier versions, you can no longer press a key to jump to a letter. You must page through the whole list. Sorry if I made more millenials cry.