Rather than make a new topic, it seems like this question would fit well here.
Should homebrew really be listed as the genre for a homebrew game? The only example I've seen (as it's the only one I own) is Beggar Prince. It's listed as homebrew, then RPG as the sub-genre. But homebrew isn't really a genre.
The reason being is so collectors can distinguish the homebrews from the "official" releases. Look at the Atari 2600 as an example, we have 46 homebrews listed in that section alone, 122 across the databases in total.
The idea is that those who don't feel that homebrews are worthy of owning, or those wanting a complete library for a system, can separate these from their lists.
Homebrew is a genre because it's a type of software. Edutainment and Non-Game aren't really genres either but they are descriptive of the software they represent. Think of genre less as a
gameplay description and more of a
software description.