The "Technology Connections" youtube channel recently discussed awnings too. (And it had more or less the same message as this blog.)
https://www.youtube.com/watch?v=uhbDfi7Ee7k
And that has way more details than this. The only why supplied here is "we forgot" and "AC"
I suspect it's not really "forgot". I suspect it's "awnings require ongoing maintenance".
No doubt true but I laughed reading this because I have an A/C technician working at my house right now, for like the tenth time this year.