That's not necessarily true. Industrial scale foraging of mushrooms isn't great for forests, so relieving some of that pressure is a good, pro-habitat thing imo.
Here's [1] an old NYT article saying there's ~8k commercial mushroom foragers in the US in 1993. I'm sure it's more now.
I know that in Europe there's a lot of commercial scale mushroom foraging going on in Eastern Europe.
[1] https://www.nytimes.com/1993/06/28/us/rushing-to-gather-up-c...
I like to cut them into pieces and either sauté them or pan fry them like with light breading, like my homemade chicken nuggets.
The book describes and analyzes the globalized commodity chains of matsutake mushrooms.