Occam is not for lazy people. It’s for extremely imaginative sleuths, which I sometimes am, and I need Occam! It’s people like me who are open to all sorts of ideas that remind us; the monster shadow on the wall is probably my jacket thrown over a chair. KISS is useful to sleuths. There are exceptions, but not that many.
Nonething you so sagely offer applies to the results of a masterfully created false identity. Ayres for example, had no use for any razor. He took a half truth and embellished it to the hilt.
If you want to use a razor, apply it to ‘Dreams’. A couple of shaves there and the entire edifice collapses.
KISS is useful in creative writing, in suspense novels, but when it comes to trying to explain a complicated set of events, KISS is useless. You are welcome to apply the 'rule' to what you write, but recommending it to me won't reduce my output, not after it took a group of people several years to reach certain conclusions, some of which I'm trying to make available here. Against a tide of rejection and ridicule, I might add; yet not one of them has the ability to take the discussion beyond attack and into the area of debate. Well, not without resorting to quoting from 'Dreams' that is.
The five W's and an H are more to the point and would have been useful had Ayres applied them.
WHO WHAT WHEN WHERE WHY AND HOW.