I agree partially, but SIGGRAPH and CVPR are highly regarded and aren't known to accept crappy work. There are some "soft" sub-fields of CS that can be a wash,

I agree partially, but SIGGRAPH and CVPR are highly regarded and aren't known to accept crappy work. There are some "soft" sub-fields of CS that can be a wash, like HCI and Software Engineering. Those fields have relied more and more on "marketability" of ideas instead of depth of technical contribution. But top conferences in fields like graphics and programming languages (POPL, PLDI) are no joke, you will not be able to get a paper that isn't top-notch into those confs.