I would re-iterate what I said over a year ago which is that this is not likely to be a focus. We are fully allocated through at least this Summer with new features and iOS 14 related changes. Those usually extend through the end of the year. I would strongly recommend using Siri or Alexa as before.
Putting time in to Google stuff also relates to whether Google has a positive stance related to their home ecosystem. It is safe to say that is currently a full head-on disaster since Google shut down their Nest APIs for everyone last August and has yet to introduce any viable replacement. So on multiple fronts from Google Home to Nest, it is not the best time to try to integrate with Google. Meanwhile, both Apple and Amazon are the opposite.