Two separate things: - I don't think that the suggestion was to remove the filesystem outright, just that if you run everything over NFS or 9P then you don't n

Two separate things: - I don't think that the suggestion was to remove the filesystem outright, just that if you run everything over NFS or 9P then you don't need drivers for ext/xfs/fat/... - To the broader "why do we even use filesystems" - because those other options are less powerful while offering marginal benefit. Also because backwards-compatibility and interoperability with other systems is useful.