Author of the talk here - glad you liked it! Replying to pretty much everyone: what Bjarne and others were strongly against was the first static_if proposal, w

Author of the talk here - glad you liked it! Replying to pretty much everyone: what Bjarne and others were strongly against was the first static_if proposal, which was a glorified #ifdef and broke scope rules. The newest constexpr_if proposal does basically what I have shown in my talk (normal scope rules, no unexpected behavior), but with a nicer and cleaner syntax.