If you are going to come up with purely conjectural advantages with no basis in known science, why bother attributing them to one thing (like quantum computing)

If you are going to come up with purely conjectural advantages with no basis in known science, why bother attributing them to one thing (like quantum computing) and not any other thing? Like why are you not arguing that C++24 will make all algorithms O(1)? There is as much reason to believe that as there is to believe that quantum computing will do so. Or maybe graphene memresistors will form timelike loops and allow computers that give you results before you ask the question? Maybe! Again, no more reason to think that won't happen than some kind of purely conjectural magic from quantum computation. Maybe the development of green energy such as solar panels will lead to the development of nano-scale self assemblers, allow us to turn the entire moon into ultra efficient computronium powered by sinking the moon's residual heat of formation into deep space, making the asymptotic complexity of most algorithms on many problems largely irrelevant. Maybe! Or maybe the insight might actually come from a school kid that trips over a rock and gets a vision after hitting their head. Better start putting pebbles out in front of schools, because you never know! :) Isn't getting a sqrt() speedup for everything and an exponential speed up for a few things good enough for you? If we really understand the idea of quantum computing so poorly that that we've massively underestimated it, isn't it even more likely that our misunderstanding has made us massively overestimate it?