Not everyone will be an Apple Watch owner, and that's understandable. I've heard many folks complaining about this forced installation, calling the Apple Watch app “bloatware.” Nothing could be further from the truth. In fact, this is an indication of how good we iPhone users have it.
Sit down with anyone who has ever bought a Samsung phone from Verizon or AT&T and ask them to show you their bloatware. Especially try to find a Verizon user who doesn't care for NFL football. It won't take long before you realize that simply seeing an extra icon on your home screen is not a problem.
Near as I can tellVideos aren't even stored on the watch, they're streamed over your WiFi or Cell Data connection.
Certainly the Apple Watch app is an extra icon to manage on your home screen, but it's not bloatware.