I know about the lack of case sensitivity, but in idiomatic Powershell, it's Pascal-Kebab-Case. If I use a language, almost everyone else's code is going to be idiomatic, so I would write idiomatic code too.
Well... yes, I suppose it is a bit silly! I've really tried to like it, but I just can't get past it.
It's just my personal preference, but I've come across quite a few others who dislike the naming of Powershell commands too - seems to be a real love/hate kind of thing.
You also have tools for that just write short and use Expand-Alias