Not true. In 1.0 you probably have a bunch of tech still to unlock and have no infinite research when you hit the end screen, and you're probably still in your starter base. When I'd finished space age I had no tech left to unlock and my infinite techs were all at at least level 10. And in 1.0, expanding was relatively easy, whereas it takes much longer in space age (because you have to scale up 5 factories).
In 1.0 SPM was a meaningful measurement, but in space age it's meaningless - it goes up without you needing to do anything. And as I said above, in 1.0 you could build something to a set number, but in space age you can't because you keep getting higher quality and additional productivity. The only tech you get post end screen invalidates scaling, because you literally get the same result without any effort by just leaving your computer on.