You don't need X299 and HEDT for anything really, especially not with Coffee Lake coming up, which will make it even more pointless.
People really overspec a shitton for no reason and end up using maybe 20-30% of what they got, if that.
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And yes, if you are heavy e-personality or youtuber/twitch guy with a ton of videos, then yes, it is good, but chances are you are not and then it's just a waste. If you do some occasional video here and there you don't need HEDT CPU.
And even that reason as mentioned is about to disappear anyway with Intel I7s going 6/12 c/t baseline and Ryzen around too.