Pretty sure it wouldn't have been brain surgery for an engineer to design a watertight automatic closure door on the under side of those vents. Opens when the ignition is activated, closes when it is shut down....
That's your choice. If I was filthy rich I'd have a lambo or a Ferrari. I am rich enough to buy a Corvette and I'd never buy one if it wasn't for the C8. C7's are over priced and not worth the money.
Not sure where you get your data from. C7's are old technology for old farts like you! C8's are a lot younger demographic and apparently a lot smarter!