Consider the fact that most laws in any tech space (yes, this includes rendered/drawn pornography) are made by turbo boomers who have absolutely zero fucking clue what they're talking about, and are stuck 20 years in the past.
As fun as it is to blame old people and tech illiteracy for this, it's not true. One, most laws in the US are written by lobbyists, who are not, as you put it, turbo boomers.
Two, proliferation of streaming, and lately AI is giving the law an excuse to further the scope creep. That's just how these things work, any government wants to grow, wants to regulate more, and more, and more. For
example there's a new law in UK that will make
creation of fake porn illegal. The MP pushing this is 45. She knows how internet works. The law is targeting deepfakes, but it's hard, or maybe impossible to write a law that would differentiate between deepfakes and good old photoshop. So the new law will criminalize both. But here's the thing, it's intentional. It is actually seen as a win. Can't have those skilled degenerates draw other people without their consent.