Can I wipe a MacBook Air running Mojave even if I don't know the Apple ID password?

I am helping a relative who has a MacBook Air 2017 running Mojave. Long story short, while she has her login password, unfortunately the MBA is signed into an Apple ID for which she does not have the password, nor the ability to reset the password (email address or answers to security questions). Since she does not have the Apple ID password, she cannot sign out of iCloud. Also, Find My Mac is activated :(

The system is backed up, so at this point my plan is to just wipe it and upgrade to Monterey, and restore her data from Time Machine backup (which is working fine). However, I was worried that Find My Mac might cause problems, due to macOS Activation Lock, since I know that's a major issue for iOS devices. But reading the Activation Lock for Mac article, it sounds like we're in luck: it requires both macOS Catalina or later, and a Mac with T2 chip or Apple Silicon, neither of which are true in this case.

Can anyone confirm that I'm clear to wipe the system to eliminate the Apple ID problem? Her Mac is mostly functional except for iCloud services, so if I wipe it and get prompted for the Apple ID password then that would actually be a worse outcome than the status quo.