Drivers won't work. According to my understanding, any unsupported operating system (those which are not signed by Apple -- even Boot Camp doesn't use the Windows UEFI certificate so Linux's shim won't work) cannot access stuff protected by the T2 chip. So it's definitely not a driver problem.
And apparently disabling secure boot still doesn't fix the issue -- see the Phronix updates[1]. I only found one article claiming you can get past over all the T2 "security" features[2], but they explicitly say (at the end of the article) that they haven't actually tested booting or installing Linux.
That's FUD, and you know it. You can disable secure boot on Mac and boot whatever you want.