This is clearly much more highly engineered and planned that the cheap ones you get at a carwash for a few dollars.
Look closely at all the AMAZON text and pictures. It is solidly built. It has a firm "clip" that you push to "open" and then "lock" the jaws on the vent. One of the main issues is that many car vents are recessed, narrow, or have prominent "finger tabs" that make it hard to "clip". This one works ok with both our cars. A new feature is a ball swivel that lets you turn the phone face somewhat to face you. Since it is nearly flush to the dash and vent, it will be a small pivot. The phone clamp holds my phone firmly (iPhone 5SE).
I like using vent phones because (A) the phone is much smarter and more intuitive than my car's built-in GPS, and because (B) the vent position gives easy access to a charging cord without the cord running all over the place like the top of the dash or to a window mount. I'm often listening to podcasts or audiobooks for which it is best to have the phone securely and visibly mounted.