First of all: there is no such thing as ignorance here, just studying together!
There is no clamp preventing the match holder from acting. Actually, when pulled, the trigger will simultaneously release both the wheel and at the same time cause the match holder (serpentine) with the matchcord (wick) to move a bit. In order to move the matchcord back to the ignition pan however, you would have to pull the trigger back all the way and hold it for longer than a second. To release the wheel, on the other hand, the tiniest touch of the trigger is sufficient. As long as the matchcord is not alight it is not harmful anyway.
Thus, both systems perfectly work via one and the same trigger.