Tasks CAN'T be Deleted or Disabled in Read-Only mode

I don't know if any of you are aware, but via Ccleaner you can't disable or delete the Windows Tasks if the corresponded file/s in C:\windows\tasks or ...System32\Tasks has the read-only mode checked.

Tested on:

CCleaner version: v5.28.6005 (64bit), Windows 10 Pro

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that would make sense, that is after-all the purpose of the Read-Only attribute.

my concern would be who set that flag on scheduled tasks?