A lot of Ryu's jump moves can be intercepted with low attacks (I've seen 9K cut-off by low wake-up kicks). And my terminology may be off, but isn't a "true mid" only strikable at mid-level, crushing high and low (like the 2P+K 6P+K)? If so, I don't believe it ever did that.
True mid is a move that his at all hit levels, usually vertical moves that rise up from the ground or from the sky to the ground. Hayate's 3h+K is a true mid, as is Hayabusa's 7k, and 3h+K. Apparently I was mistaked about his 8k though.