Even putting aside comments like mine complaining about the actual number, this thread's extensive use of 10x to mean as many different things is a good reason to avoid the term altogether. The whole thread is just "10x programmers don't exist because X" and "10x programmers exist because Y", where X and Y are unrelated.
> "10x manager"
All but one of the links in the first page were in the context of SW, or written by people in the SW industry. Many of them explicitly pointed out they derived the phrase from 10x developer.
I cannot count this as an independent use of 10x.
> "10x author"
Written by a tech guy.
> 10x <various_nouns>" : https://www.hugo.team/10x
Written by a guy who started a SW company.
> "10x" spreading out to company names, etc : https://www.google.com/search?q=10x
Sad, but fair enough.
It sounds like 10x is the equivalent of putting 2.0 on everything (and also as meaningless).