That works. When the person who made the mistake is more senior I've also used "I found this and I don't understand, could you explain?" As in, you're assuming it's correct and it's you who doesn't get it, which means you're not telling them it's wrong, you're leaving them to realise that that for themselves, and they can then save face by saying something vague like "I'll look into it" and then quietly fix it.

I mean, the post says it'll show you who your enemies are, and that's absolutely correct. It just doesn't mention that if your manager is one of those enemies, then following this advice will hand them all they need to throw you under the bus.

To be fair it's very useful to know if your manager is that sort, and if they are then you should probably leave if at all able, but it's better to find out quietly and then jump rather than being pushed.

I wonder how much of this is influenced by the fact that online multiplayer gaming is an entertaining activity that can be done with friends, and we just had two years of remote learning and lockdowns. The kids who don't game are more likely to have just had two years where their social activities were taken away from them.