I've said many times on different topics about wind and kayaking.
The problem is that a kayak even those propelled by leg power have a maximum speed, and a paddled powered kayak can't maintain that maximum speed but for a few minutes and the motor starts to get tired.
If you try paddling into a 15 mph wind for any length of time you are going to lose or at best be at a stalemate.
Anyone going out into open water in a wind of 20 mph is more than likely going to be pushing the limits for trouble no matter how much in shape or experienced they may think they are.
There are just too many nice days living in Texas to get out in bad weather, and the fish will still be there on those nicer more enjoyable days.

That's awful, my thoughts are with his family for his safe return.

I kind of think it would be a good idea to have a sticky thread of incidents like this for people to reference. Not to scare anyone off of course, but more because there's always something to learn from these things when they happen, and not to hide the fact that kayaking - while it can be very safe and fun for the whole family(including kids), can be dangerous and things can go south very, very quickly if not prepared. The immediate story that comes to mind is the guy that flipped a couple of years ago that had his anchor tethered to his hull inside his front hatch, which anchored his yak upside down in the water.