With NTFS you can enable or disable case sensitivity. Is there a way to do it with ext4 in Linux?
There are patches currently under development to implement case insensitivity for ext4.
They were included in the Linux 5.2 kernel, and also require e2fsprogs-1.45 to work. See How to enable new in kernel 5.2 case-insensitivity for ext4 on a given directory?