This I could get behind.
But I still think PS4.5 will make PS5 feel less impactful and more customer will play waiting game hence slower adoption rate, ultimately hurt PS5 in the long run.
It really depends
If PS4.5 os treated just as a minor upgrade. Better graphics same controller and similar design to PS4. Same software updates on the PS etc.
However with PS5 it has a bigger jump in graphics, different controller design and completely new OS and some unique features to the console to set it apart.