That is OK, but . . . afterward, you will have missed all the updates to Windows (a horror for Win10), as well as for other utilities, and upgrades that have replaced earlier versions of your most-used main programs.
Sounds like a lot more work than just keeping malware and viruses off your machine by regular housekeeping with available (even free) antivir and anitmal utilities, as well as having a solid firewall.
i think it’s more a last resort for those that might get malware and want to start over with clean install- it would save a ton of time- but there would still need to be things done like updates- driver updates etc-
So you are absolutely certain there is no malware embedded in your system because you practice prophylactic computing?