As a heavy Mac-User/Professional, theres is one reason not to buy a Mac, if you play online Poker.
Imho the hardware is still good, and the overpriced thing is not really true.
(besides from the un-usable, unnecessary Touchbar)
(Try to sell 5-Year old PC's for more then pennys
)
Anyway you seem to have now, do it like me, get yourself a Windows10 license and install via Bootcamp, (no virtualization recomm., due to to the havy use of database use, if you use Trackers)
And you got the best performing PC available.