Hello,
I think this is a bit more than opinionated than what you say.
I agree SVN does not enforce that, and have been using SVN for years myself (well, I stopped now).
So, I'm not surprised the plugin does not parse this as the same.
Now, having said that. I guess proposing a PR on the plugin to use a system prop, or even a global checkbox to allow case insensitivity could be considered. But in the end, it will also the maintainer's choice to support or not an additional complexity for a possibly pretty rare situation.
You probably want to search or file an issue describing your case first, and propose an associated pull-request to move forward.
Cheers