Yes, I think we can all be thankful that all of the major British political parties were united on the need to support Ukraine. As my Ukrainian friends will always point out - Don’t think of it as Europe “helping” Ukraine - instead think of it as Ukraine taking the brunt of Russian aggression to save Europe.
Strictly speaking, this is a limitation of the default filesystem, and not the core operating system. If you mount a NFS share that is case sensitive, it will still be case sensitive.