IANAL but the DSA says nothing about requirements to inform reporters on a community moderation level. It is only concerned with illegal content and this cannot be simply flagged. It has to be a sufficiently substantiated explanation reported to the instance legal contact.

Before FUSE was available every filesystem driver had to be part of the kernel and adding a driver meant modifying the kernel. With FUSE filesystem drivers can be installed as normal software without the need to modify the kernel.