This subject has been hashed and rehashed several times through the years. IMO, the blame for all the wasted resources on DB's over the last 10 or so years is multi-layered. It starts with the scouts then the GM and then the coaches. It also has happened under the watches of 2 GM's and multiple HC's, DC's and defensive coaches.
Scouts and GM: Take a guy like Josh Jackson. At one point he was being heralded as a first round pick. He "falls" to Gute at pick #45 and it appears the Packers got a steal. Jackson IMO is the definition of a complete bust. He struggled in GB, didn't make it past the 3rd year of his rookie deal and hasn't played in the NFL since. Funny thing about Jackson and possibly a sidenote to the whole "DB's in GB Debacle", he was traded for Isaac Yiadom. Yiadom was a CB that the Broncos drafted at #99 in 2018 and gave up on after 2 seasons. They traded him to the Giants for a 7th round pick, who also gave up on him and dumped him for the Packers Jackson in a trade. Yiadom barely had a cup of coffee in GB and was eventually cut in 2022. He finally ended up with the Saints, must have had a decent 2023 season, because the 49'ers just signed him on a 1 yeard deal, that is worth up to $3M.
Coaching: Players like Yiadom, Hyde and Heyward, that leave GB and play much better with other teams, leads me to believe that in some cases, it has been the coaching that is the issue. Granted, maybe the players mindset and/or skillset greatly improved with another team, but why?
My biggest takeaway from the Packers DB Debacle, is focused on all the wasted resources that were used on DB's that didn't pan out and how to stop that bleeding. Resources that if spent on other positions, may have improved the team. While we have all complained about Capers, Pettine and Barry, I put most of the DB duds on TT, Gute and the Scouts. For whatever reason, there was way too much draft investment in DB's that ended up wasting those resources. Given that Gute is beginning to bat just as bad as TT did when it comes to DB's, I really have to wonder if they need to hire a new scout(s) that specializes in finding talented DB's.