IoT has it's place in the world. But I have been vocal in my family that I do not IoT in my house, for this exact reason. By and large, IoT devices cannot be managed by the people who own them. Hence, we cannot guarantee they are secure and safe to have on our home networks.
My bro-in-law works for a big tech firm, and his house is full of gadgetry. All of his big appliances (refrigerator, dishwasher, clothes washer and drier), a full suite of cameras, Alexa and home automation to go with. He maintains multiple VLANs to separate his user devices from his IoT devices. It's all good and nifty, but his house would be a wet dream for a hacker if they could get in.
No thanks. I prefer to keep it simple. I don't need my drier to tell me it's done, or my fridge to tell me I'm out of milk.