I think you're right in that there was no strong hand guiding the organization, making sure everyone was on the same page.
The focus on winning now seemed to have sapped attention on scouting and development, and they've been treated as more of an afterthought than the heart of an organization.
I don't think it was necessarily wrong to teach contact and hitting the opposite way, but it seems every fad is pursued without nuance, you should be tailoring your instruction to the players, rather than trying to push square pegs into round holes. If you have a kid with speed but limited power, then GB/line drives make more sense than launch angles - conversely a slow kid with power should be focused on launch angles than gaining .020 higher BA from hitting the opposite way.
I think this may stem from a misunderstanding of analytics, "all models are wrong, some models are useful" but it takes wisdom as well as statistical training to identify useful models. So analytics should be a starting point to asking questions, not a source of cookie cutter strategy.
Understanding when and why a certain approach can maximize the talent of certain players is the proper way to guide development. Instead of copying what other teams are doing, try to figure out WHY it seems to work, and what part is worth incorporating into your player development process.