On the topic of wind. The book goes into great detail about how to adjust both training and racing paces based on the wind, which I had never really thought about except when running into massive headwinds. The way I understood it is that you should have your baseline paces assuming ideal conditions and then adjust them based on the wind. Practically, this means checking the wind speed/direction before a run, considering the direction of your run to identify if it will be headwind/tailwind/crosswind, then consulting the tables in the book to see how you should adjust your pace. I don't own a Stryd, but I'm experimenting with running my workouts using wrist-based power from my Garmin. As far as I can tell, my Garmin grabs the wind speed/direction from a local weather station (the same one I would see if I opened a weather app) when I start my run, but then it cuts out the other steps - it knows what direction I'm running and it has some algorithm that is probably about as accurate as a table in a book about how to adjust the power number it displays.
It seems to me like power solves the most complicated part of the book (to me), which is how to factor your environment (specifically elevation and wind) into your paces. Similar to what atoponce said, I'm not as concerned with what the number on the watch actually is, but I do want to pace workouts and races appropriately and power seems to cut out all of the extra planning advocated for in the book.