CRAN has a list of the currently available M1-workable contrib packages, which doesn't include rpsm, which is being sailed single-handedly by Daniell Toth, whose contact information is given in the link.
Tomas Kalibera, Simon Urbanek review the technical issues associated with M1. Traditionally Simon has pushed out binaries of contributed packages 7-10 days after source release. I imagine that the new system has slowed things down.
If I were trying to roll out in an M1 environment, I'd set up a CRAN mirror to do all the required binary work on packages in the library used and have the team pull from that. Not trivial.