They suggest that if the full fee range has already been pre-signed, anchor outputs may not be necessary. The sender argues that in any situation, a transaction with a sufficiently high fee can be broadcasted and mined without the need for anchor outputs.

It seems that the sender is seeking clarification on the additional uses or benefits of anchor outputs beyond increasing fees. They also provide a link to https://petertodd.org, which may contain further information on this topic.