and note that a 65" TV cannot be swivelled up to 90 degrees.

I used it to mount a Bravia 55" which is much lighter (less than 20kg). I think it should also fit a 65" as the mounting specifications would be the same (it also says in product name Vogels Thin 546 Wall, 65" 30kg). However, you have to take care to keep additional allowance for some extra weight . I would go for a next higher version if possible