Not a bad idea for many but what if I want cake? I don’t want carbs at all, never had carb cravings on keto except related to veggies/fruits when I seriously neglected them. I might not NEED cake but it’s nice to have some now and then, it has its uses.
I don’t actually want cakes myself at this point (I just want to make them sometimes, baking cakes and breads are my hobby, cooking too but baking is different), I ate sooooo much on low-carb and keto (I can’t bake carby cakes but low-carb and keto ones are easy enough for me) but I have circumstances so I kind of need to bake cakes. For a high-carber but I can’t and really want to bake carby ones as I mentioned so I make very low-carb ones. I have a relative with diabetes and I like to bake for her too (she bakes great stuff but still with lots of sugar and flour and it’s mostly for us, two people who gave up sugar ages ago… it’s way better if I make the baked goods, at least sometimes as I can’t keep her from baking completely). But when I was a beginner, cakes were pretty useful for me. Maybe it’s a two-edged sword and I don’t think people should rely on them unless their diet is too restricted or they need to do things more gradually or something. If it’s about eating keto cake or eating normal cake, one usually should choose the former, keto without desserts isn’t always an option. But that’s ideal, at least most of the time, I think that too.
I understand people who use cakes/desserts not as crutches, just as quite normal, nutritious, tasty food they want to keep forever (maybe occasionally, maybe frequently). Why not? We are different, with different goals, even on keto. As long it feels right for the person, I can’t see much problem with it.
So it’s a quite complex topic and everyone should think about their individual cases and decide if it’s worth it. But again, I agree, if someone can get away without using cakes, just eat (even more) normal keto food, it probably makes life simpler in most cases and one reaches their final destination, their final and hopefully ideal diet earlier.