It depends on the project. If this is critical code, 9/10 times it might not be an issue to let it slide in favor of getting the release out early, but that 10th time is a disaster. Weird things start happening and you don't know why and the team dealing with the fallout may not even realize which change caused the issue.

So now there's a lot more disruption and a ton of frustrated people throwing way too much energy into finding what ultimately ends up being a one line mistake.

After a few rounds of that you decide that if it's going to take 6 days, it's going to take 6 days.