So I just did this fix, couple of findings
The command for removing "Microsoft.Windows.Movies & TV" got a parsing error on the ampersand - I tried a few variations "&" and ("&") - but these tokens also got parse error
So went on the net and found this command for removing Movies & TV
"Get-AppxPackage *zunevideo* | Remove-AppxPackage"
This worked
Install from Microsoft Store was easy, install dates on the Photos and Movies & TV were updated to 1/13/2022, so this worked
The command to re-install also worked, however there were many messages about not being able to update, for example, sometimes "newer" version were already installed
> Type: Get-AppxPackage -AllUsers | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml"}
So I think it may be helpful to update the instructions for removing Movies & TV
Also, you may want to add a note to take a few restore points before doing this
Lastly, I've seen that there are "Win 11" versions of the Photos app? I could not tell from the download info if I was just re-installing the Win 10 version
So we'll see if the error re-emerges, usually happens in a week or so...
Thanks for your help