>Have you use a broad fork? It's like 4-6 blades spread across ~4 feet. The mechanism of action is totally different, and no, it does not break up the soil in the same way tilling with a spade or rototiller does.

Yes. E.g.:

https://en.m.wikipedia.org/wiki/Jean-Martin_Fortier

https://en.m.wikipedia.org/wiki/Broadfork

https://www.en.jeanmartinfortier.com/