If you got a distro installed on your device and got it working properly, then why would you mess with BIOS settings? It could only mess your system up meaninglessly.If it's working, don't fix it.
It won't hurt anything if you disable secure boot. I personally don't use it on my Linux rig. The only thing that it does is prevent the system from booting if a bootkit or other malicious code was inserted into the EFI binary. We're a bit less vulnerable to these on Linux, so I'd honestly just shut it off and use your preferred distro.
I think I would refer to that as a piece of crap.