You want a console that was releasdd in 2013 to the baseline until 2021? That isn't happening.
If people want to bring up PC's, the lower limit of PC's is going to do that anyway.
Fine, 2020 is my lowest concession. This thing is supposed to have twice the power and supposedly a brand new CPU. If you want better performance, its there. And game design stays with a clear baseline for developers, its a win win.
If your arguing against having a baseline like this, what's the point of having PS4K? It goes out of style 2 or 3 years after it launches and people are required to buy a new unit in PS5 that takes full advantage of the platform?
If we're moving to "two units a cycle" then the cycle has to be long enough to support two units.