Looks like they migrated it, from the Github README:
This repo contains the inspur.sm Ansible Collection. Inspur server supports ansible management device,Basic management of the server based on restful interface. Collections functionality will migrate to the inspur.ispim collection, head over to the new collection.
Yes, it looks like they’ve migrated the functionality to a new collection. So this one really seems abandoned. The new one (inspur.ispim) already seems to be part of ansible.
The vote ended today. 8 steering committee voted in favor of removing inspur.sm from Ansible 11, which means we’ve reached the quorum and the vote is accepted.
There were also 2 votes from the community in favor of this, and none (neither from the steering committee nor from the community) against it.