We have them [Jerusalem Artichokes] growing wild here - DH keeps weed whacking them but they keep coming back, lol. I've never tried to eat them.
I have never seen them growing wild here. But I now live in forest country.
At any rate, you cannot kill the Jerusalem Artichokes by weed whacking them. You have to pull out the entire tuber system and not leave any parts behind. That's next to impossible, from what I am told, and that is why the plant is so easy to grow and so hard to get rid of. Hence, people suggest planting them in a confined raised bed or large containers.
I would certainly try to eat some wild Jerusalem Artichokes now that I have learned a little bit about them. But I like trying new foods.