In case your request doesn't get implemented and you're open to alternatives that will require a bit of effort:
What I'd do is tag my music using the syntax that MusicBee expects "Firstname, Surname" to look for artist bios and other things.
And then change the "sort as" artist tag to "Surname, Firstname".
That way, you can display your library using the 'sort as' artist tag and at the same time still get MusicBee to read your artist tag the way it expects to.
I already spend hours on end on social media. Might as well spare a few of those to a greater purpose here.