Not sure if you are joking or not, but no, his numbered list of issues does not make a perfect sense. Item 1 is irrelevant -- one very rarely cares about fixed

Not sure if you are joking or not, but no, his numbered list of issues does not make a perfect sense. Item 1 is irrelevant -- one very rarely cares about fixed-size metadata record for file, because one doesn't normally cache metadata for each file on filesystem in memory. Items 3 and 1 contradict -- if the file record has an arbitrary number of tags, it cannot be fixed-size. Item 4 is solved by MacOS (via access-via-inode) and Windows (via file tracker service). I cannot quite understand what he means by item 5 but maybe he is talking about Windows not having trusted "ctime" field? If so, this just Windows' problem, all Unixes solved it long time ago. You may want to check the technical merits before recommending the project for adoption.