We can argue all day and night about the 8700K holding back the 1080TI the fact is there is no absolute answer to that no matter how much you try and stamp absolutes on it in some cases the 8700K does bottleneck the 1080TI./
Besides that ^^^ obvious flaw in you argument you're avoiding the question, how do you know the 8700K will not bottleneck the next generation of GPU's? you can't know without knowing how much headroom the 8700K has, if any and how much faster new GPU's will be, you don't know any of that so once again you're just making blanket straw statements to avoid your own arguments about AMD also applying to Intel, of course it does.