Don't forget – if someone unlocks your door and leaves it ajar, then anyone can get in.
Chinese companies are not well known for their cyber security practices. Even if you don't care how they could use this information (either individually, or in the aggregate across millions of people), you should also care about who else would be able to hack into the feed.
You don't want a "kia boyz" situation with a camera in your home. Imagine some kid finds an easily exploitable vulnerability and releases some software allowing anyone to tap into your camera? This has happened with security cameras already. It's even worse these days with cloud connected equipment, all you need is a vulnerability in the cloud command and control.
And, although most US agencies are not allowed to collect data from citizens in US soil, they can (and have) collected data procured from elsewhere.
The bottom line is, the same information can end up much, much closer to you.