I don't have in-depth knowledge of the differences and how big that is. So take the following with a grain of salt.

My main point is that using containerization is a huge security improvement. Podman seems to be even more secure. Calling Docker massively insecure makes it seem like something we should avoid, which takes focus away from the enormous security benefit containerization gives. I believe Docker is fine, but I do use Podman myself, but that is only because Podman desktop is free, and Docker files seem to run fine with Podman.

Edit: After reading a bit I am more convinced that the Podman way of handling it is superior, and that the improvement is big enough to recommend it over Docker in most cases.