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This article seems to have a major factual error. YAML does support “Repetition” with anchors. Am I missing something?

Anchors are fairly limited:

- they are bound to a single file. This won’t help you when trying to maintain multiple similar sets of Config

- anchors do not support patching. If you need to change a nested key, you can’t do so without it affecting all other nested keys as well

Anchors also don't work with a list of elements.

For instance, if we want to share steps in a YAML based CI config we can't if they are a list.

I found that odd too. Typical examples like https://confluence.atlassian.com/bitbucket/yaml-anchors-9601... are pretty easy to map to their example of why they need repetition.