Even if there are tight time constraints, you won’t sacrifice quality, because that would make you slower.
Too right. People find this so hard to understand. I think they dramatically underestimate the payback time on technical debt.
I am currently working in a startup that has the classic "we're a startup, quality doesn't matter" attitude. They think that they might not be around in a year so it's best to go fast and not give a shit about tech debt.
In my experience that attitude bites in under 6 months. I'm already wasting entire days sorting out messes that they neglected to deal with.