I think that one of the biggest issues is that a lot of training is flat out horrible. The author preaches simplicity and working directly with the business, but mean while you have entire teams of developers being taught something like Clean Architecture, SOLID, DRY and all sorts of fancy things that when used poorly leads to extreme over-abstractions.

So even the most well meaning engineers with good training can go about building data structures which won’t last very long once the key people leave. Simply because what they were taught doesn’t work.