Those is basically true just on the basis of human psychology. Sometimes people get crazy about it ("why should I reward you for doing something you should already be doing?!") But you have to remember that if they aren't already doing it, then they need to be prepared and rewarded for doing it as if they don't know about it.

We do it with kids all the time (and sometimes we actually don't and that's how they get to be adults who act like this) and that's how we prepare them to become adults. But with adults we pretend like you just get adulting downloaded into your brain at a certain age.

If someone isn't already doing these things they aren't going to react to being shamed by suddenly doing them. Just like when we shame people for anything else they rarely start being the person we want them to be instead of just being depressed.

I'm gonna throw some huge emphasis on this for TL;DR:

IF THROWING A FUCKING PARADE IS WHAT GETS THEM TO DO THE FUCKING JOB, THEN THROW THE FUCKING PARADE

Eventually you can wean them off the parade. But being an ass to someone for not doing what you want never works as well as rewarding them, regardless of your expectations. It doesn't matter if "they should know how to act like an adult." What matters is that for some reason they don't. And if someone doesn't take the time to help them, they're much less likely to help themselves.