RTP is a real thing, but it's misrepresented. It actually drives me nuts that Eddie says dumb stuff like "that's the enhanced RTP kicking in" because people actually believe that stuff and he knows that's not how it works.
RTP is a theoretical value that you should expect x% of your money back in a very, very long time frame. Keep in mind it's theoretical, it's not guaranteed. You might beat beat RTP over a billion spins, and you might not.
While I wouldn't call them a "scam", enhanced RTP is deliberately misleading. You cannot nor should not expect enhanced RTP to pay more in the short term. Whether RTP is 5% or 95%, your chances of winning on any given spin is the same. Better to just play the originals because at least you have the slim chance at nabbing a prag drop which are disabled for the enhanced games.