CGI furniture is quite common and pretty acceptable as it's just a layer on top of the photo. Whatever software they use is really good about marching scale.

Personally I'm a fan of it. I lack the ability to look at an empty room and "see" a layout so it's kind of awesome to have a mock-up.....

...But I saw a listing the other day that took me a minute....a pool table taking up way too much room in the basement. Then I caught the small text on GAME ROOM sign. A ceiling tile grid that changes sizes. A hallway that turns into a nook between photos.

That's where I draw the line. The edits don't help me understand the layout or give me design ideas, it's simply false advertising.