Tint always looks great. I've limo tinted almost all my cars myself (time+patience) but I hope you know what you're getting yourself into with a tinted windshield, besides the 100% illegality in all 50 states, night driving becomes sketchy.
Pedestrians in Baltimore, you've been forewarned...!
It's just 50%. It's almost not even noticeable from the outside and definitely not from the inside. In concept you are correct, but you've probably never experienced 50%. Very few people do it, let alone post photos. Many view it as pointless since there's no added privacy, but it dramatically reduces the heat coming in from the most angular piece of glass to the black dash.