"no caching"? Hmm.
I was going to complain that most people use something akin to apt-cacher-ng or squid on the client side, anyway. But then, realised that FTP doesn't have a standard way of getting file metadata, particularly the HTTP-like "last-modified" data that's crucial for avoiding downloading (mirroring) stuff you already have. Sure, running "dir" works, but there doesn't seem to be a standard way of presenting all the fields ...
Overall, probably a sensible move. Still, with FTP disappearing it does make me feel just that little bit more antiquated.