hi for https://docs.prefect.io/2.10.21/guides/cloud-run-push-work-pools/ that is just announced, does it work for self hosted prefect server?

Push work pools are a Cloud feature.

Would this be deemed as breaking the “hybrid model” approach if used? More a curiosity

If you use a push work pool, you don’t need a worker, but the code still runs on your infrastructure (e.g. ECS or Google Cloud Run). Prefect still doesn’t see or store your code, just the usual metadata and logs.