Look, mathematics, being able to calculate pot odds, implied odds, outs etc is a poker basic. You simply cannot play optimal poker if you do not understand these concepts. You make the wrong bet amounts, and you call when you shoudl fold etc etc
But it is just one facet of playing good poker. I have a Bsc. in Computers and Mathematics, and it helps. But my biggest weakness is my poker emotional IQ. I get impatient grinding hours at live game, I let assholes at the table get under my skin, and I am a really bad loser. I would rather have lesser maths skills , but be more well rounded on the others.
If you want to be a great poker player, you need math skills, but you also need to develop other skills as well. Without being well rounded in all departments, you are swimming upstream.