He's a welfare leech, one of those that proudly proclaims he's "pulling one over on Uncle Sucker" by being entirely reliant on the government to live.
Which is also a major reason he hates Groat, as I understand it. When Mikey boy was publishing his furry harem toering fetish magazine, someone reported him to the government because his particular form of welfare required him to have zero other sources of income to keep receiving it. Mikey, like a true parasite, decided to stop publishing his furry porn so he could keep getting his

. He's always had several suspects for who reported him, and Groat is one of them.