But the valuation of that .500 varies. If it's 2 singles, that's not the same as 2 doubles. Or 2 singles and a walk. Then you slide to OPS which on the OBP value values hits equally to walks, and on the SLG side double counts hits as every hit registers a base which factors into OBP. You can slide to wOBA which is the best offensive rate stat that we have. But Linear weights are not 100% perfect. The value of a walk is not necessarily the same every single year and a hundredth or thousandth of a point move may not have a gigantic effect but it's screwing up the valuation.
You don't understand defensive stats. I get it. Instead of blurting out that they're invalid, maybe you should just ignore them (which you do already) and not make ignorant statements about them. No stat that applies value is perfect. And no valuation is even remotely close to perfect. If you think that based on what you want to believe that you can accurately prescribe value, then you're a fool because you're certainly not a better judge than advanced metric.