HOWEVER, if you get to 5 or 10 mins and you feel you need to use it for a longer period of time then USE IT! Who gives a rats about the time limit. Take heed of this wizofoz, or you may need to reassess your priorities.
I take my priorities very seriously thanks.
As such, I work for an airline that has engine out procedures that are designed to have the aircraft clean and clear of terrain inside the (for us 10 minute) limit for operation at greater than MCT.
If circumstances meant needing even TOGA power for longer to avoid terrain, of course I would do it- knowing I was exceeding a limit.
What YOU are suggesting is that the limit doesn't exist.
You're wrong.