Is this an acceptable method of blurring/removing background(external app)

Hi there everyone!

I saw a StackSocial deal on an app called XSplit intended for removing or blurring your background. I had always wondered how this was accomplished so I thought I’d ask if something like this app is an acceptable method of handling background stuff or whether there’s another solution that’s more widely used. I won’t link the deal because I don’t want the post to look like a spam post but they’re selling a lifetime license for 20 bucks.

Does anyone use this app, if so, how do you like it and if not, what do you use instead(and what does it cost)?

Thanks for your time!