True.
I'm using the PS+ Premium subscription as basically for backlog and games I didn't purchase.
Because of limited gaming budget, I buy 2-3 games on day one (on average) and 4-6 games on sale every year. In between those purchases, I use the PS+ Catalog to bide my time.
For instance, I bought Hogwarts in February, Horizon Burning Shores in April, and will buy Final Fantasy XVI. Between Horizon and FFXVI, I've finished Ghostwire Tokyo, Devil May Cry 5, and Doom 2016 from PS+. Currently playing FFVII Remake Intergrade from PS+ Extra.
You can probably use it the same way.