Industry-wise Docker Swarm is somewhere between "on life support" and "shambling corpse" and has been for a while.
I'd say for at least as long as since the Mirantis acquisition in 2019.
I mean in all honesty running docker swarm instead of k3s or k8s seems ... i dunno, lol, i've slowly moved away from using docker even on my single hosts i run podman now instead, i like using systemd for containers :S