It’s not just defender, Window has so many problem. Like constant ads to try to get me to use Bing and Edge. It is bundling a bunch of random software and games during install. It is forcing users to create a Microsoft account when setting up the computer.
On top of all of this, it is the only operating system to crashes on on me during use. Even though it is on my most powerful hardware, it is the computer that runs sluggishly all the time.