If I was using lower camel case then, yes, I'd spot the error immediately.
Similarly if I was using upper camel case.
And, with my suggestion, the editor would warn you that two variables, when uncased, are the same. Let the programmer then decide. The issue of 10000 lines is irrelevant - you only need the warning once.
The point about camel case is that each new appended word is capitalised and there are plenty of words in English which can also be constructed from two quite different words appended together. Camel case with case sensitivity allows you to distinguish the two cases (

). So Scraggle/scraggle is a poor example.

I get the impression you are arguing with me just for the sake of arguing.
Not really. I think I've exhausted what I have to say on this though.