The fact that you didn't have the proper equipment to measure the led current (a Tek scope with a DC current probe) means that you have no idea what the current was during that brief flash.
At the very least you should have measured the current with a DMM.
The fact that you did something with no idea what the current would be is sufficient to conclude it was foolish. Your speculation about what the current could or couldn't be is irrelevant. The fact is that by your own statement,
the flash was blindingly bright, indicating excessive current. How much is irrelevant.
The fact of taking action with foreknowledge that the current is unknown is evidence enough of foolishness or worse. The fact that you continue to argue the point indicates you are incapable of learning.