It's already established and a lot of highly knowledgeable local mycologists already hang out there and have no interest in switching to another platform.
They have a stiff chalky texture that's easy to recognize if you know it but throwing them at a tree to see if they shatter like a snowball is a great way for beginners to confirm that they've found a Russula.
In addition to the reasons for given for Russula in the other comment: LBMs tend to be deadly poisonous and aren't that interesting to look at so nobody cares about figuring out which one is which except professional researchers.
Russula at least have colorful caps, choice-edible species, and are fun to huck at trees.
Mushroom species have different geographic ranges and it's hard to identify species from a photo unless you've seen it in real life so global groups tend to be less useful than local groups.
Also the accessibility of the fediverise as a platform is an issue. The best place to go for PNW mushroom identification is a Facebook group as much as I hate to say it.
I'm sure he's about to be appointed secretary of something he's unqualified for any day now.