@jbz

Many good points there and it aligns with my experiences.

The speed or velocity we need to focus on is that of FAST FEEDBACK from stakeholders/users/"the business" or whoever puts stuff into the backlog. Then have the practice to include them when their story/requirement/demand is being developed. (It's a buzz-word, but I do like "co-creation" as a concept.)

Speed in delivery comes from building what people need, built with quality (through testing) and we'll all be happy.

Delivering the wrong thing fast isn't helping anyone.