In ~80% of the games Soto actually started (98), he was placed in the 7th (40.8%) or 8th (38.8%) position in the batting order. Without looking, I'm going to assume the Cubs were probably the only team in baseball to consistently dump their team leader in OPS+ and wOBA at the bottom of the lineup. Soto's OBP is a bit of a mirage though. He drew 25 walks in the 8-spot and 25 in the 7-spot. I'm willing to bet the majority of those came because they were trying to get to either the pitcher or whatever light hitting middle infielder was batting 8th that day. Same goes for Castro... he drew 17 walks in 32 games batting 8th, while only drawing 10 walks in 72 games batting 2nd. I'm not trying to diminish Soto's On-Base capabilities, he definitely has them, but I think his OBP is a bit inflated due to batting in front of lesser hitters throughout the season His slash stats by batting order over his career are as follows:
4 .375 / .483 / .667 / 1.15 29 PA
5 .233 / .314 / .451 / .765 258 PA
6 .263 / .371 / .414 / .786 361 PA
7 .287 / .370 / .514 / .884 514 PA
8 .272 / .379 / .470 / .849 240 PA While these aren't statistically robust sample sizes, he has demonstrated solid OBP skills just about everywhere he's hit (not that I think you were really debating that). You may be right that hitting in front of the pitcher helped him put up a .393 OBP last season. Still, how many 8 spot hitters posted anywhere near a .393 OBP? The league average was .316, the lowest outside of the 9 spot (.306), so its clear that not all hitters benefit from being in front of the pitcher. Very good hitters do. Unfortunately, their skills are often squandered there. Such is the case with Soto. I'm not arguing that he should hit 3rd, its just very galling to see his talent shunted to the bottom of the order simply because he wears shin guards.