You're not the younger generation anymore.

https://en.m.wikipedia.org/wiki/Generation_Alpha

no one of Gen Z, that I know of, is unable to do any of those examples.

"That I know of" is the hallmark of Gen Z: Thinking that their experiences are the only experiences.

Taking the manual transmission example, there were a number of items in the news back when manual transmission was more common about Millennial and Gen Z would-be car thieves being unable to drive away because they didn't know how to use a stick.

But since you didn't know them, they must not exist.