Re: The problem with that is...
"since UEFI is highly complex, it's likely that you'll experience serious bugs during the use of your device. Therefore you need to update it."
I have never needed to, or actually, updated the firmware on my UEFI machines.
I'm with you on it being flaky, though. Just last night I lost a few hours because UEFI began to refuse to boot to my hard drive after I booted it from a USB stick.