I have too often seen that "agile" mostly means "let's drain more water from the waterfall", ignoring everything outside of the development work. This article here has a nice "urgency" chart which depicts an all too familiar situation where time passes for a long while in the decision and planning phase, only to generate a lot of pressure on the delivery team. In other words: the overall cost of delay of a feature is a function of the overall lifecycle, not only of the development. A devops initiative might be completely wasted.
https://charleslambdin.wordpress.com/2020/03/12/is-cd3-the-golden-key/