I get ya, I've dropped several mushrooms because a surprise slug on the bottom was a little too close to my finger.
the_artic_one
There's other differences as well such as death caps having a ring on the stem and a thicker cap which lacks the striation you see on the paddy straw mushroom (Vovariella sp.) and the edible Amanitas (grisettes, cocorras, etc.).
They have deadly Amanitas in Asia too and they have many of the same features so Asian foragers should already know how to tell them apart.

A sudden uptick like this makes me think that AI photo ID apps may be to blame. They're nortoriously bad at identifying mushrooms partially because it's impossible to ID many mushrooms from a single photo which is unlikely to show all the features needed.
That's an Amanita, not an Agaricus.
Mostly you want to wash your hands because mushrooms tend to be covered in dirt/leaves/duff.
Which Agaricus will kill you? I'm not aware of any in the PNW.
Edit: I think I remember having this conversation before, you're using "Agaricus" to mean "all gilled mushrooms" like it's the 18th century instead of what it actually means today.








I would guess you're thinking of the white dapperling (Leucocoprinus leucothites). That one is supposed to be a pretty mediocre edible to begin with, absolutely not worth all the poisonous lookalikes it has.