I disagree. Instead of anchors we had to rely on third party file change actions to only trigger jobs on certain file path changes, instead of using the built in mechanism, because each job required the list, and the list was long.

Using anchors would have improved the security of this, as well as the maintenance. The examples cited don't remotely demonstrate the cases where anchors would have been useful in GA.

I agree that YAML is a poor choice of format regardless but still, anchor support would have benefitted a number of projects ages ago.