So only DCH drivers from now on with no Control Panel?

It isn't actually "tied" to the MS Store, one can install the drivers without it - it's just an AppX/UWP package of the Control panel. If you happen to have nuked the AppX Installer or are on a version of Windows that Nvidia doesn't support anymore, there really isn't much to complain about. It's probably best if you reinstall a supported version of Windows with the AppX installer intact.
You may be able to manually install the old standard control panel from a different driver, although I haven't tried.

 

Because that's what MS wants now. This is Windows, and this is Microsoft. If you hate it that much, then it's time to switch to a different OS, I would say. (I did.)

 

Simply run a refresh upgrade. Download the MS ISO creation tool, run it, let it upgrade to the same version and you will probably be fine.

 

They are NOT tied to MS Store.
The thing DCH is tied to is the AppX Installer, where the latest is this one if I'm not mistaken:


I think I even seen someone unpacking the NVCPL package with something like MakeAppx from the Windows SDK...

Else I would recommend to give Windows the middle finger and switch over to the dark side... or was that opposite?

 

Or try to run these from an administrative command prompt before you do a refresh upgrade:
sfc /scannow
dism.exe /Online /Cleanup-Image /RestoreHealth