I mean, 100% agree on that.
As for the usefulness of backup cameras... I don't have one myself but I've rented a few cars with them and they do give you significantly more visibility when backing up than the rear window can provide, even in a reasonably sized sedan. But sure, rain might interfere. I don't think the fact that it's not perfect means it's not useful.
I haven’t priced out what replacing that little motor will cost someday.
And yes, it definitely makes parking in a tight spot easier.
If you won't use them, you should at least be happy that other people have them so they don't back into you. Cars are dangerous.
https://www.consumerreports.org/cro/2012/03/the-danger-of-bl...
https://www.iihs.org/news/detail/rearview-cameras-reduce-pol...
Something had to give, and that thing was visibility.
This was my first car after getting my driver's license so I'm afraid I'll never be able to park in a car without it...