Here is the thing (and this article perfectly describes it) : There are phenomena, like pitch framing, that existed for ever and there are measures that try to quantify that phenomena. Going from qualitative ('he is a great framer') to quantitative ('his framing skills produced x more strikes than the average catcher') is a hard work. And it gets harder as some of the data points (like umpire strike zones) are subjective and movable targets. Are all metrics perfect? No, there is no such a thing. But of course they are better than "gut feelings" and "eyeballing" because there has been a whole lot of effort to go from qualitative to quantitative and from subjective to objective. As there will be more and more data points with the new systems installed that collect raw data, metrics will improve. But sitting down and blasting a metric without even bothering to understand how it is derived and what it is trying to do, is plain lazy. People put some work in developing those, at least try to figure out what a metric is trying to do, and if you try to blast it, blast it with objective criteria (eg. "this particular parameter is not a true measurement of that") vs. subjective (eg. "my eyes tell a different story".) WAR has been killed to death and misused and abused. It is a great metric to show overall performance over a long period of time (a season, a career etc.) and it is better than batting average, home runs and RBI that have been used in the good old days... Now is someone is trying to use WAR for things it was not meant to be, like looking at potential future performance, shame on them, not on WAR... The beauty of baseball is in the fact that there is a great degree of uncertainty that cannot be measured/quantified (how do you quantify UCL conditions or "stuff that happens".) And this uncertainty over 162+ games almost makes predictions based on metrics, practically invalid. Which is the fun part of it On the other hand, metrics are getting better in describing what happened, when and why. Time will tell, but I do foresee a new generation of metrics with all those data points, based on if/when type of situations improving over a lot of metrics like WAR, UZR, etc Just my couple of Lincolns