They actually both play MPO.
I truly dislike the PDGA division classifications. Neither of them is a pro. When I refer to MPO I refer to it as the Open Division. Someone calling a 970 golfer (or, at this point, a sub 1000 rated) a pro is a joke.That's true, and Hunter is rated 970 something. Trevor I think is sub 930 but plays open anyway.
When I'm out in the pool world - I'm making cash from play in sanctioned leagues and tournaments but the last thing I'd ever do is embarrass myself by referring to myself as a pro pool player, and that's the accepted norm. I know tons of people like to say "dIscGolF dOesNT nEeD tO bE LiKE oThEr sPoRTs" but come on - someone rated below 1000 is only in the rarest of circumstances going to be someone who can refer to themselves as a "professional" disc golfer (circumstances such as: taking a year off due to financial constraints, injury, etc. - and these are people who would normally be over 1000 rated).