well, to be more precise.
- command-i -> "simple-normal" get info (static) -> if you do that on multiple files, it'll be one window/file
- command-ctrl-i -> "simple-normal" get info for multiple file (static) -> if you do that on multiple file, it'll be one for all the files
- command-alt-i -> "inspector" get info (multiple, single, whatever, as it's dynamic)
So, all the behaviors are still in there, but, maybe you're right, i mean, i have some memories where the point 2 was the default one (afaik, it was maybe in pre-X systems)
Still, always think of the modifies (ctrl and alt), they often brings to the light some variation on the usual shortcut behaviors 🙂
To have a clear view on this, click on a menu, a try with alt, with ctrl, and you'll see how it change the behaviors (in this case, clic on the "file" menu (a short time, so it's still active), then press alt, or ctrl . It's sometimes surprising to see how much useful shortcut are discovered in that way.