I'd be concerned just because this is aluminum. Do a good repair, forget about it and ride it for years and it it were me, I'd be riding it when it finally failed. I have witnessed 3 cranks braking at the pedal. Two were on the bikes whose wheels I was following racing, Both riders went down hard. I broke the 3rd a a perfect place, just about to crest a small hill. Put my foot down awkwardly on the road, sat down and coasted to a stop. Couldn't find my pedal. Oh, its clipped to my foot! I coasted a mile to my destination. I figured I've used up my good luck and won't mess around with shaky cranks again. (That one was an old Avocet tossed on to a newly set-up bike as temporary solution because they had the right chainrings.)

You have no idea what stress that crank saw when the car hit it. And with aluminum, that crack starter event will not show a bend or dent as so often happens with steel. Unless you are very methodical and check before every ride, any crack that starts will result in failure while riding. And it will be the crank just snapping and the pedal falling off, no warning at all.

Ben