I've used 3 different "smart controllers" over the past few years - just a glutton for punishment I guess
I started with a CyberRain a few years ago - it was ok but their weather models and ET calculations were goofy at best, and resulted in massive overwatering. My lawn is still recovering all these years later.
I went on to a Hydrawise - decent, but didn't show me the "under the hood" ET and precip information I wanted.
The Rachio Flex schedule was exactly what I wanted - all there, plain as day. It is smart enough to skip and delay a single zone at a time, also what I needed.
I can understand the desire to simplify for some - but keep Flex around and call it the advanced option...or something like that.