Wow, dolnet. You are very sharp. Yeah, indeed. It is too low CON.
But it cannot help. You can add 24 CON more into CON, but then it will be level 98. Actually wind fighters are only good against fighters and physical mobs, but their biggest weak point is a strong mage. The STR 65 and AGI 124 are needed to get the highest mysterious skill "Storm Attack". The Storm Attack is the strongest attack skill of wind users.

Actually the CON 30 is good enough for wind fighters and mages, as long as if they have vanish. Besides they can also depend on the protector's stone wall. So they can attack first, while the protector give the wind a stone wall. The stone wall and the vanish have same goal, protect from physically attacks. When I was a wind fighter and saw a mage, I would to attack him fast as possible, without vanish. That is very risk, I know, but there are always others, who can support wind fighter/mage. Like water shield from healer.

Another danger is flying out of the battle. If I calculate good: 100 HP as a lvl 1 player + 90 levels x 2 HP + CON 30 x 10 HP = 580 HP as a theoretic HPmax at lvl 90. It means 580 x 1,5 = 870 damage. If a wind warrior/mage got 870 damage or higher, then he will fly out.
But even he got 60 CON: 580+300 = 880 HP. The damage will be 1170, which can easily made by Fire Mage. It means he needs a lot of CON to be handle against Fire Mage. So he can better just defense, when he sees a fire mage as enemy.

I must say, I have though a lot and went through the calculation. As the result the low CON suits wind fighter/mage the best.