So, no Netflix? Good luck with that, Amazon. That's like 60% of the use case of my older Fire tablet.
Maybe the OS doesn't matter for pure smart speakers as long as there's an Android app (I use quite a few routines). I find their Alexa is lagging behind, it's the epitome of artificial dumbness, in 2023 these things should be Chatbot gAI level. I have four of them (insane, but we don't use physical light switches much anymore). Way too often Alexa struggles even with setting a kitchen timer⌛ and I stopped asking it questions due to the poor quality. I lowered my expectations to getting the news and play Spotify music. Even asking for the weather is less then impressive. But that's off topic.