Mainstream smart home solutions are super sus. I know someone who uses Alexa Home. It (she?) stops responding if the internet is down. You cannot turn off lights without internet. There is absolutely no reason for simple voice commands to be routed to Amazon’s servers since this is something you can do over the local network.

The only saving grace not provided by the company taking the money

Even without the Insteon servers and app, Insteon’s protocol has been reverse-engineered for a while now, so it’s possible to control the devices locally without the app. It’s also possible to pipe that local control into another platform’s hub controller, returning the smarts and remote access to your smart home.