He could easily have inquired without giving instructions. For example, "has anyone experienced the free version of Nova Launcher acting like the paid version?" That gets the question out without providing stepwise instructions on how to make it happen. Anyone who has had it happen to them would know exactly what he's talking about, and anyone who hasn't wouldn't know that there's a bug that can be exploited.
It's clearly a bug. He's getting something for free when this should not be the case, and he knows it. It doesn't actually matter if anyone else has experienced this. All that was needed was to contact the developer. More harm may have been done by posting about the bug on a busy forum. I'm sure you two wouldn't take advantage of this, but there are a lot of people who would, and now can...
This is completely different from posting about a feature of the program not working as it should and asking if others have experienced the same thing.
If I was the app's developer and saw this thread I would not be happy. Amazingly, and disappointingly, it appears that I'm the only one who sees this as a problem.