A little double plot action for this post. We do see a correlation between K rate and Isolated Power. Essentially, the more of a "slugger" the hitter is, more often we will see an increase in strikeouts. The ability to Slug is an essential factor for good hitters and is becoming even more important with today's era trending more and more towards three true outcomes.
However, as you can see, there is no correlation between K% and wRC+ . We can say with confidence that how often a player strikes out has no real bearing on how productive the hitter is to the offense. The takeaway here is that players should expect a slight uptick in K% when trying to Slug more but is well worth it when the player can successfully boost his Isolated power and overall slugging performance especially in today's game.