That is the question I guess. If you are trying to make money from what you do, are you not "running a business"? It might not be a traditional business, but seeking individuals to support you financially for the work you do would qualify as a business to me anyway.

Even if you created multiple revenue streams - write a book, produce a game, Patreon, etc. - which appears to be your intent, you essentially are the business at that point, no? At least that's how I'd view it.

Technically yes. In the computing world, "industry" is a pretty grey area; instead of a hard line between "hobbyist" and "professional" like in most white-collar industries, it's more of a gentle gradient.