Perhaps we're making different assumptions, but a process that "is not beyond what a person of average intelligence and modest computer skills could pull off with some patience and a video guide" sounds quite a bit more complex than a mere Unlock option in iPhone settings. Also, the results are different too. The process you've described results in an Android desktop, whereas the proposed iphone unlock process would result in a full macOS desktop, which sounds (to me at least) much more desirable to have.

I stand by my speculation that if it were possible to do that on an iphone, it'd definitely be something loads of people would do, including a large amount of people who shouldn't open their device that way but do just because they watched someone on social media telling them to.