I used to agree that the Twins would play this game, but I do think some things have changed, mostly because the players used to get their layover in Low A, which now doesn't always happen. Hicks and Arcia were allowed to rise to the majors quickly, and others have been allowed to make multi-level jumps. However, you're right that there is at least an arguement to be made that Gibson, Meyer and May were given the stop sign at AA and AAA. It may be intentional service time manipulation, though based on the pitching results for the last decade, I'm more inclined to think they simply don't know what they're doing when it comes to developing pitchers.