You are missing the point. Its not about paying for Plus now and getting what they are showing what those that have already paid got for the year. This is giving an example of what your $50 a year for ps plus gets, which from a pure gaming standpoint holds a definite value. The fact you express not getting these games for the money de-values ps plus for you shows it has value to you.
The problem is you are mis-interpreting either intentionally or unintentionally as a payment for those games upfront which its not. You will hit that number but it will be through the future releases not from claiming what others have already gotten ftom paying for their year. Those were the games offered over the full year for payment that someone had to pay for. You get the amount of games you pay for, you get more the longer you subscribe but you also paid for it.