My impression was just that it was the cleanest way for her to map things on top of the existing kernel structures (which are probably tree-ish). And I highly d

My impression was just that it was the cleanest way for her to map things on top of the existing kernel structures (which are probably tree-ish). And I highly doubt that there are any actual issues with this aspect of her design; it was just picked out as a contrived example by the blog post. I suspect if Lina's DRM patches had not come from a Rust dev or invoked "RAII theory", and were only advertised as improvements for clarity and conformance with expected behavior, they probably would have been accepted far sooner. (She says as much in her Mastodon post.)