That is correct. I have tried the same yesterday and HACS was failing to verify the repository. I have forked it just to prove that HACS works and it works fine when using my un-archived fork.
In other news:
Hildebrand Glow have just released local MQTT support via their IHD (so no need for the cloud anymore - the non-dcc (mqtt) integration).
There is a new thread started by another user on this topic and I am currently working on it. I will provide more info there.
UPDATE - Info provided in that thread