You even have to go through "Erase Mac" twice in process. It's only work if you reboot it properly after each time which is not mentioned on support page. Such a mess.
One reasonable alternative is to use Apple Configurator and set the number of failed attempts before wipe to much lower than the default 10, say 2 failed attempts only.
Wipe the drive, clean install macOS. Tedious but suck it up, it might fix the problem. But at least it will likely skip a step when sending it for warranty support. I don't recommend hesitating, it's not normal.
I have to flap my macbook's wifi and/or reboot several times a day. I can't find out how to fix it from their joke of online support - just a load of people bitching about the same thing and deleting the plist file, IIRC, which is a temporary fix.
Sounds pretty close to bricking for the vast majority of Mac users though. Typical user won’t be able to solve it and good luck getting help at the Apple Store.
Out of curiosity, have you tried a factory reset? If not I'd get in contact with apples tech support, they've always been remarkably helpful to me and they don't make you jump through hoops of fire to get help.
Have you considered getting someone with some Mac skills to help. Your tone is that its something wrong with Apple hardware but as you said an entire professional industry does it so it's a problem on your end.
I had this exact thing happen to me when I tried to reset a Mac and wipe it clean. Would not start up and went into this doom loop when booting with the apple logo and a black screen. No amount of key combinations worked. I had to drop into DFU, which is a huge pain to get into to begin with and then use another Mac to recover.
That's only in the case of you bricking the firmware though. I'm sure they'd help you get back on the road over at the Apple store if you didn't have another Mac handy.
Most recent MacOS, I think it is 10.12.5.
Problem is they wipe the drive and then claim „well it works“. On the last call (50 minutes....) they even threatened that I have to pay if it turns out it is „my files“ that cause the problem.
When you boot into safe-mode, this instantly pops up (funny that is says MBP model 13.3 when I have the 15 inch version): http://imgur.com/a/SnCCM
From comments #736 and #747 attached to the forum post you kindly shared, it sounds like simply disconnecting and reconnecting the I/O board may be sufficient (found those comments linked in #831):
https://support.apple.com/en-us/HT211983
You even have to go through "Erase Mac" twice in process. It's only work if you reboot it properly after each time which is not mentioned on support page. Such a mess.
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