Don’t know myself as I have no use case for that setup, but it is a well known setup since several years. If teh performance was bad it wouldn’t be recommended as an alternative as often.

JBOD via mergerfs and snapraid on top for parity is a possible solution.

Missing it too, it was awesome! Readitlater/pocket was just an okayish replacement. Now I’m just too lazy to replace it with something self hosted.

Have been using it for years, it never failed me. Quality software.