I disagree about hiding the new BGFX option. In MAME core it's enabled and you can use it even if it displays only some screen info at the moment. So we should support it and make it available. If this user is annoyed and has probably a messed up configuration, it's not our problem.
I left run in attract mode and then played MAMEUI and MAMEUIFX with Karate Blazers as test game for an hour and no crashes.