Any post that deals with a TT quality issue will inevitably lead to complaints about the TT industry, the people who work there, the people who run them, the lack of foreign competition and a host of other thngs.
The fact remains that it is the customer that dictates the price. The price dictates the quality.
There is a reason that foreign companies are not cutting into domestic TT production, it is the same reason the domestic companies are not having TTs sub-assembled off shore. Simply put, no foreign company can build a unit cheap enough to compete with the domestic manufactures; and deliver a product that is acceptable to the US consumer.
Tires, electronics, appliances, bath fixtures, plumbing etc. may or may not be partially out sourced already. It would not surprise me to see the frames and running gear imported sometime in the future, so we can complain about that also.
Changes to the industry will come when the folks buying TTs demand and are willing to pay for it. Given the break neck pace of the current RV market, I would not hold my breath.
As an aside. I hope that somewhere in these lengthy posts the OP received a satisfactory answer to his delamination question.