I see no further point for this discussion. Either you truly do not understand or are pretending to not understand the difference between memory models (affect literally every memory access as long as the system is powered up) and BIOS (not used once the OS is up, and thus one-time at-boot quirks handling code can work around most issues). Either way, g'day.

Oh, and to answer your question, yes, quite aware, actually. I've done quite a bit of low level work over the decades, including, curiously, working in the Apple platform kernel team at the time when this TSO bit appeared.