That's a good question, but I have never though about that issue.
If MS want to show external storages (USB, SD) together with Network environment same level of that navigation panel then those shouldn't be under "This PC".
OR: If MS want show all directly connected devices under "This PC" then it isn't needed that higher level.
"I don't understand why MS is ignoring this annoying issue, also every update gets rid of the temporary workaround (either one) restoring the registry to the original bug."
Only registry change I do after clean install is to set Windows read and handle data from Real Time Clock as UTC instead of local time and this settings remain over updates.