Why Omarchy chose to ignore all the rootless OCI-compliant containers; and also why docker itself isn't rootless yet is a pretty interesting thing to discuss. I'm not aware of the specifics being a Mac user myself, but others in the thread (e.g. here https://news.ycombinator.com/item?id=49500186) say that podman still doesn't work 1:1 with docker exactly.
If you disagree, that's a reasonable thing to discuss; but otherwise just saying "ha ha just use the rootless thing" is missing the point.
There's absolutely meat on the bones regarding root/rootlessness, but that's not the problem at-hand. The problem is shipping vulnerable defaults, and the case is closed.