I don't know if I just am taking this too literally, or if other people just don't know what tacos look like. When I think of someone managing to taco a wheel, I think in terms of them basically folding the rim in half, making the wheel resemble a hard taco shell. Not something you can true up and keep riding. Then I read people saying they totally taco'd their wheel on a ride and their brakes were scrubbing the whole way back to their car or whatever. Now obviously if the wheel was folded over they wouldn't be nicely riding back to their car. What do you consider taco'd?
Or a little warping due to a hard landing or a sloppy techy spot or something?