Yeah generally people don't buy a car frequently enough to navigate the bullshit, plus you kinda get emotionally invested during the 3 hours they make you hang around, softening you up.

I have had pretty good luck laying on my don't give a shit demeanor extra thick.

Out of 7 car purchases in 10 years I have had one instance where I should have walked out because the extended warranty BS was insulting (Honda) and once I threatened to walk if they didn't Due Bill a replacement second key - he didn't like that at all... (BMW).