[JSR_FDED]

> you're 100% having to muck about with sketchy kexts

Apple has replaced kexts (kernel extensions) with a user-space alternative for many years now

[dddddaviddddd]

Hence

> that almost certainly will break in the next OS release

My scanner has drivers available for download that date from 2015 with no updates since then.

[longislandguido]

My solution to this very problem was to virtualize an ancient OS X (was not easy) so I could continue to use a perfectly good scanner.

Though I'm certain you've raised this issue before, and it was met with "I've never heard of anyone needing a scanner, you must be doing something weird, have you tried taking a picture of it with your iPhone(R) instead?"