Coauthor here, while the migration hasn't been without its pain (it's a pretty big paradigm shift from what we were doing before), it's been a huge boon to our productivity. We went in fully aware of the drawbacks of SDUI and think we've come up with an approach that gives us all of the benefits and solutions to the drawbacks (semantic components and actions). It's made simple every day product changes SUPER easy, while not making more complex changes harder.