K rate is a very good tool to use to raise a red flag, but there are quite a few high K rate players today who provide a big plus to their teams.
Stanton finished 5th highest in K% at 30% while providing a 4.2 WAR last year.
14 of the top 17 K rate players had a WAR of 2 or more (including JBJ).
17 of 21 had a WAR at 2.0+ and 21 out of 26, including Goldschmidt 5.1, 3.5 BHarper, JBaez 5.3, TStory 5.0, TPham 4.0, MOlsen 3.4, Schwarber 3.2, KDavis 2.6, J Aguilar, CTaylor & J Upton at 3.1, J Gallo 2.8 & Conforto at 3.0
High K guys can be successful.