You're half-right. There are a lot of noncommercial or personal infringements that are being overprosecuted by either zealous litigants or outright fraudsters.

You're half-right. There are a lot of noncommercial or personal infringements that are being overprosecuted by either zealous litigants or outright fraudsters. However, at the same time, there are also a lot of artists who misrepresent or misunderstand what they actually do and don't own. The kind of people who will scream about how "the Internet is public domain" on one end, but also that someone with money "stole their idea". Likewise, there are also artists that are genuinely getting ripped off, but don't really have the means to fight back[0]. This is more common than you think, and I feel like this book is aimed at that group of people. [0] This is why you have lots of bots that steal Twitter art and resell it as T-shirts or NFTs.