I might be being a bit pedantic but just a reminder that on the -800 if you firewall it the EEC's don't give you any EGT protection.
Whoever is talking about fire walling the thrust levers for a normal go around on a classic must surely be a PC Simulator pilot.
I wasn't aware that most engines don't even provide EGT protection even if you don't firewall it.
EGT is not a failure condition (if the engine is still running) unless you let it go long enough.
I'd be more worried about running into a surge/stall line and ending up with zero thrust. Thats a point failure rather than a wearout condition over minutes due to excessive EGT.
Not to worry on the new machines that limit what you can command and at least guarantee that your engines will stay with you until you land.