Have you ever had to convince a non-technical boss or client that the exploratory MVP you wrote and showed to them working must be completely rewritten before going into production? I tried that once when I attempted to take us down the TDD route and let me tell you, that did not go over well.

People blame engineers for not writing tests or doing TDD when, if they did, they would likely be replaced with someone who can churn out code faster. It is rare, IME, to have culture where the measured and slow progress of TDD is an acceptable trade off.