He sure has.
The challenge is to take that influence somewhere exciting and individual. Seripop have done this like champs. So have Michael DeForge, Jesjit Gill, some others.
But there is a huge ton of other Mat Brinkman-influenced poster art that just borrows his language and does nothing with it. It's like a phase that lots of young poster makers go through on their way to somewhere else.
Mat Brinkman is the Jay Ryan of noise rock.