Buster Moon is a gigantic POS

The "hero" of the Sing franchise is probably the worst role model you could give to young children.

What they were going for is that you should follow your dreams even when it seems hopeless, blah blah standard kid's movie theme, but the underlying message really is that you can lie, cheat, and steal to get what you want.

Let's go over Sing 1...

He is shown outright stealing electricity, water, and glass windows from his neighbors because he can't afford it. Many thousands of dollars worth, felony theft, multiple offenses.

His theater inadvertently advertises a 100k prize, ok just a mistake at first, however he finds out about the mistake and proceeds to repeatedly lie about it to everyone involved. Felony fraud, you can't advertise a non-existent prize for your PR stunt.

He manages to destroy his entire theater by filling it with thousands of gallons of water. Besides being insanely stupid this clearly violates numerous building codes and safety laws. You'd have to have permits out the arse to do something like he did. It's a miracle he didn't kill a bunch of people.

He continues his egregiously unethical behavior in Sing 2...

He trespasses his way into a private building after being told repeatedly to leave.

He then lies about having access to Clay Calloway in order to get funding for his show.

After his fraud is discovered, he is rightfully fired and the show cancelled. However he proceeds to take over a theater he doesn't own, basically becoming a squatter and holding the place hostage. He's stealing hundreds of thousands of dollars of resources solely to put on his vanity project.

There you have it kiddos, always chase your dreams. Lie and steal as much as it takes. Break whatever laws you must. Your dreams are all that matters.