This was only for the SSH integration, not if you just ran "ssh" in iTerm? I don't see these /tmp/framer.txt files on any of the hosts I sshed to (plain ssh).
From the release notes it seems only if the in-built SSH integration was used and the server that a more recent (5ish year old or later) version of Python. The latter condition is probably going to exist even on enterprise dists (RHEL 9 for example will have Python 3.9 installed by default)