Just look at how out of date NewPipe is in F-Droid, it's maintainer just isn't motivated to get new versions of the app building on F-Droid's servers, leaving end users with a half year out of date client that is unreliable to use.
All of the v26 releases are missing. F-Droid's maintainers just did not build or publish these, leaving F-Droid users with a broken app since early December 2023 until 2 weeks ago, basically 5 months of shipping an app that did not consistently work.