That's how yomi works. If you think he's going to go for his mid, you do something that beats it.Geras has variable framedata on d1 due to 2 active frames and at certain ranges it becomes -3, and it does trade with both d1 and d3 at that range, and i can't just block and walk "back words" because he might as well just go for his mid in that situation and just straight up beat me, or even if i block it i'm back at -3 situation after he finishes the string on block, maybe you should try these things in actual games before glancing at framedata and making your assumptions LOL!
But if he is, he's no longer just mashing d1, which is the point.