I am guilty of disturbing the soil, when I am growing thing out doors I alway till down about 2 feet and add super soil I make myself, with a lot of perlite and worm castings. I try to till about a ten food radius around each plant because the further the feeder roots travel the bigger the plant. They usually don’t go deeper then 2 ft. I place stones to step on so as not to disturb the soil, but I’m anal so I like to track my feeder roots to see how far they travel in a certain amount of time. It helps you dial in the nutrients your using. Sometimes they travel past the ten foot mark, so I till out further and add more of my mixture. Also a very important part growing is the acidity in your soil/ growing media so soil disturbance needs to happen for that reason as well. This is a fun conversation, I did not think I would be having on here!!!