[panick21_]

Every PC has millions of lines of firmware code that often fails and causes problems. Case and point, pretty much all hyperscalers rip out all the traditional vender firmware and replace it with their own, often partially open source.

The BMC is often a huge problem, its a shifty architecture and extremely unsafe. Meta is paying for u-bmc development to have something a bit better.

Doing things like rack attestation of a whole racks worth of firmware if stacked PC is incredibly hard and so many companies simply don't do it. And doing it with the switch as well is even harder.

Sometimes the firmware runs during operations and takes over your computer causing strange bugs, see SMM. If there is a bug anywhere in that stack, there are 10 layers of closed source vendors that don't care about you.

Costumers don't care if its PC or not, but they do care if the machine is stable, the firmware is bug free and the computer is safe and not infected by viruses. Not being a PC enables that.