That was enlightening, and it sounds like fun. I’m a longtime community gardener, so I read the linked article about Marcus Henderson and the guerrilla garden. I think that vegetables and flowers are infinitely superior to grass, so good for him, the other gardeners, and people that donated the started plants.
There is a problem though, and that is where they planted the garden. Municipal and any type of institutional landscapers generally use a commercial weeder and fertilizer early in the spring on their fields of grass, and those fields look pretty lush and appear to be nothing but grass, so there is almost certainly herbicide in the soil under the cardboard and compost they put down, and of course the plants will root down to it. Mr. Henderson really needs to get in contact with the Seattle Parks Department if the crops grow long enough to produce to find out about that before he feeds anything he grows there to anybody. Nothing coming out of that plot will be organic because it’s all about the soil. You can’t just randomly pick a spot of dirt in a city and assume it’s okay to grow to wholesome food there.