That is factually correct. I am disappointed in Zwift’s values in choosing to put energy into those features rather than into avatars, hair styles, bike styles, etc. that better reflect actual Zwifters.
Multiple requests for hand cycles go back into beta days, at least back as far as July 2015. It’s long past time to deliver. For example:
https://forums.zwift.com/t/hand-cycle/6038
That was in the Super Common Feature Requests carried over from the earlier forum: Hand-cycles in game: Handcycle Avatar