My entire point is to quit focusing on the outliers. Don't cherry pick samples either way. Don't pretend like baseball teams' front offices do, either.
Also, I'm not sure where you're getting your stats, but Rosario's career OPS is .784. League average for the last 80 years has never been that high. Similarly, Rosario's 2018 OPS is .803. League average for the last 10 years has been around .720.
Also, it so happens that Rosario has, beginning in 2017, dramatically improved his discipline. He went from a strikeout to walk ratio in the 7 range in 2016 down to 3 in 2017. He regressed a bit this year, to 3.5, and I don't personally see that as any reason to panic. His walk rate this year is above his career average, and at 26 years old, I don't know why anyone would assume it has peaked.
Finally, you think you'll find a team that will trade for him on the basis of his .950 first-half production, and not on his career numbers and trends? That's ridiculous, and I don't think it lines up with your claim to know how baseball front offices make their decisions.
Check back ... I used OPS for corner outfielders. What is obviously much more relevant than comparing to all position players. His career OPS of .784 is 35 points below the average of .819 for corner outfielders.
A child failing the 6th grade would probably know better than to think a team would give value commensurate with a player able to sustain a .950 OPS. It was a tongue and cheek statement.
There is absolutely no denying Rosario takes horrible ABs. The numbers don't lie and he was almost the worst in all of baseball. Fanaticism is not a good foundation for logical or even rational thinking. The situation with Sano is the perfect example. When I tried to say it was not too much to ask for a professional athlete to stay in shape and there was obviously room for a6'4" 280lbs + man to lose some weight, there were people here who were absolutely incensed at my suggestion that he was out of shape.