Yes, but he has been there for much longer and he has miners for like everything that is mineable!
But you're right... insane too

Anyway. If you calculate, 2% is about $300 a year per rig (at today's rate, so probably much more).
I let you decide if it is too much...
And then, you have pool fee, transactions fee, trading fees, withdrawal fee, income taxes...
EDIT: I forgot electricity! that's about 20% for me
Basically, you guys are mining for others! I'm just saying...
Meh, I don't begrudge the miner authors their cut as long as they deliver something that makes said cut worth paying and respond to issues in a timely manner. That said, bringing in >$360k US every month might sap the motivation to actually do real work... because, baller lifestyle, right?