You can maintain it, and get the associated glory and fame!
(it honestly seems relatively finished, so I don't think there's all that much work, either.)
I did consider that. But then a cursory look at the open issues proved that I don’t have the requisite knowledge, and resources (various platforms that it supports)
Then there is Rclone which can do sshfs alike mounts
Though from quick skim of https://rclone.org/sftp/ it seems you have to configure each remote. With sshfs you don't need to do any configuration apart from ~/.ssh.
Until you need to write, at which point you run into a litany of quirks that stem from the fact that rclone is designed to work with fancy remote kv-stores and has no idea how to partial-update.