Went to his site, he's graphically quite good, leagues ahead of any other rightwingers I've seen that way. He may be lazy though. every "joke" he's doing is already established Rightwing echo chamber propaganda, wasn't funny the first time as it had no roots in reality. Lies are usually short lived Ben, even in their world.
Right now Donald Trumps threatening to miss the next debate because mean ole Megan Kelly might ask a policy, character or background accomplishment question,,, or a question even. Cartoonist are drawing the Don as a big baby throwing a fit, as he is and has done a lot. Garrison draws him as a virile young and literally a lion with women hearts aflutter around him. Methinks Garrison himself is such a useless woman.
He's visually pretty good though, as I've said most them are one step above disjointed stick figures. He could be stealing from others and tracing/replacing, these days that's pretty easy but I can't back that up with evidence. Bit of Mort Drucker and Al Davis from Mad heydays there but that could just be valid influences.
I look at my old drawings and see shades of Kirby, J Buscema , BW Smith, Kane or Buckler (70s teen). So I won't fault him for that unless he is literally tracing.