I will chime in since my husband watches a lot of poker:
Most of the "Poker Pros" are extremely intelligent. Besides the fact that many hold several degrees (which is more than you can say for the average person), they play a game which requires a lot of work in the mental department...for example, at any given time a player:
is running odds (calculating numbers) in is his head (both 'implied' and 'pot')
montioring the amount of money in his stack, in the pot and in his opponent's
making tough decisions based on internal and external factors
trying to 'read' his opponents psychologically, physically and emotionally.
Saying that poker is not an intellectual engagement makes it seem like these educated people are just throwing their lives (and education) away--yet, many are making more money playing poker than they likely could in the finance, engineering, etc... world.
And, by the way, obtaining multiple degrees from a higher intstitution of learning is an intellectual pursuit (what else would you call it?).