Laugh all you want. Numbers don't lie. Of the top ten qualified hitters in OPS for 2018, I took their 3 years splits to defer one season anomalies. If they put one of the first 3 pitches in play, they had a slash line of .354/.362/.661. If they went 4 or more pitches, the line went to .239/.405/.443. The OBP is better, but everything else is much worse.
Take the best pitchers with the lowest OPS against and you get the same results. If one of their first 3 pitches is put in play, they give up .277/.286/.451. They get a guy to 4 or more, they only give up .184/.298/.294. That's barely any difference in OBP with massive drops in the others.
If a player had 600 PA over a season and went by either method, the latter method would get the played on base only 23 more times. A pitcher would allow only 20 more base runners with 800 Batters Faced. The difference in SLG alone would more than make up those differences.