IMO this totally avoids the obvious fact that a complex fully functional, gated ion channel formed by essentially shuffling the maize mitochondrial genome. By any measure, this is an increase in what an ID advocate would call functional information.
But as far as the biology, there are a few things to consider. One is that Turf13 is a gated ion channel, they key to which is a toxin produced by a fungus. From the perspective of the fungus, it is very beneficial.
But there is more to consider. Recall that plants have many ways to,approach the matter of sexual reproduction. Some plants (Cannabis) are monoecious - individuals may be male or female. Others are diecious - their flowers are both male and female. Diecious plants may tend to outcross or self-pollinate. Some plants incorporate male sterility into the mix, as a way to further promote outcrossing. (Of course in such populations there will be normal and male sterile individuals.)
Turf13 makes maize plants male sterile. Contrary to what some may claim, this actually increases the reproductive strategies for the plant, and is not a detriment to the plant. Also, male sterility is not an arcane and contrived creation of plant breeders. It happens in the wild as well. Put it all together, then what we have here is an increase, not only in functional information when it comes to proteins, but in reproductive options and interactions with microbes.
All coming about by piecing together some non-coding sequences. Randomly, via unguided processes.
(Please do not try to claim that plant breeders in the 50s and 60s could design this protein from first principles, then create it and get it into the maize mitochondrial genome.)