Imagine that you're a good manager and you know how to do your job. People respect you, and working feels natural and not very demanding. Well, to this wonderful scenario, add a new character: the CFO's son. This nepo baby was stuck in your team because his father wanted to give him a job… or something to do. You know that is probably a sensitive topic, so you give him the simplest task ever: CTRL C + CTRL V. Copying and pasting documents…
At the same time, the company hired an intern, and your coworkers, smarty-pants, decide to give all of their nasty work to this new kid… leaving you reconsidering what you did with the nepo baby. Perhaps you should have given him more responsibilities? Maybe one of yours? And after confirming he's not even capable of copying and pasting anything… You confront him.
Shame on you, because now you're on the blacklist.
Your higher-ups told you not to push him, or you may end up being fired. Imagine that, take a second…
People go to college; they work hard to find a good position in this hideous job market that we're facing, only for the company you're working at to side with this rich kid who clearly doesn't want to work or know how to work. Anyways, you know it's already a lost battle. You should swallow your pride and just do what you're asked to do… nothing is going to happen. Play along, and that's it. Yes, it's awful, and this manager probably deserves some respect. But ranks are ranks, and have to be "respected".
Besides the ego issue here, it's good to understand the rules inside any company. If there's somebody's son in there, then you should treat them like royalty and maybe expect nothing from them… play along with what you're told, and your job position will be secured. Sounds terrible, I know. But look what happened to this manager here: he wanted the kid to work harder, and he got iced out.