I've only every had inky cap come up in my
lawn, and rarely more than 3 in a group, so all I can say is, "WOW" you've got happy, happy fungi!
I've heard that there's also a chemical they tend to clean from the environment that you don't want in your body, so I will also second the, "don't eat too many", although I've never had a bad reaction. I heard that a decade ago, and can't remember what it was, but my sad memory is suggesting it was something I considered a "heavy metal". So you might want to do some research specifically about Inky Caps to see if they might be simply sequestering something you don't want in your soil, or if there's any chance something in your
hugel was exposed to toxins (possibly naturally in the geology of your
land, possibly introduced decades ago, possibly somehow brought in recently - this is *not* about panicking or blaming - it's about identifying and fixing).
Then again - you could make ink:
https://www.instructables.com/Make-Ink-From-Decaying-Mushrooms
https://foragerchef.com/shaggy-mane-ink/#
The second link suggests there are two varieties of Shaggy Mane and one's less toxic combined with alcohol than the other.