Simple and easy solution - Add one line of code in bootup
after kldload acpi_video is executed on boot, then execute a set level of brightness: sysctl hw.acpi.video.<device>.brightness=<level>
You could check for current brightness by using hw.acpi.video.<device>.brightness
You can enumerate supported brightness levels using hw.acpi.video.<device>.levels
Moral of the story: Never get a dim "super or not" 'genius' that can't seemingly understand the basics of unix and acpi_video controls...