Mixture (and other expert support/experienced users)
The terms Backup and restore historically, have an explicit meaning for many people.
I'm talking about the capturing (very nearly) of a total snapshot of a system; (perhaps covering a number of both logical,physical and remote mapped drives) at a time and restoration being the explicit reverse of the backup process.
I'm allowing for the "Backup" in this sense, covering the situation of System on"C
" and the installed applications on another partition(s)
Provided that users (like me) keep an archive; using the three copy principle on a regular basis depending on scale of use - with a rigorous schedule of Anti malware and anti virus checks (preferably automated), together with regular copies of your working data on USB sticks or other writable media is practical.
Where is the problem ? (No offence by the way) - with system restores. with after restore checks and updates etc and re incorporation of the working data back onto the system for small scale users.
Of course, full scale system re builds from scratch using original media (if available) is an safer option - but possibly a last resort.
If the offending infection has ensconced its self in the Boot Sys including the New UEFI ? Has that been compromised ? - surely post restore checks will reveal its presence and a full scale Sys re build is the only option.
Think of the problems of re installing Cards, Printer(s) and "Old" but functioning kit. Think of the No of applications that accrue to woring systems (CAT III a Bad offender here - all very useful at the time)
The bad guys do not play fair; I suspect that in some cases you might need to contact your ISP to get your internet facing internet address changed - and also changing E-Mail accounts deleted etc.
I propose that for many simpler users, a traditional "Restore" is a practical option if made regularly.
Correct me if I'm taking your "Restore" to mean a replication of the data back to the new system, keeping the data structures in place.
Copy may not be the right word, think of the days of PKZIP - I used this in action for years (without probs) and associated copies if the [edit: Un-zipped] files made systematically at the same time.
CAT III