I think I figured out why people don't use the yayaya combo with tech punish variation.
If you do 2B and they don't tech, they can airtech and get out for free.
With that, I propose a new tech punish setup: 5B6CC into.. 2AAA for a tech-punish opportunity, or IAD jC for mixup and superior oki.
If they forward tech, then 6C turns into 5C, and you have a braindead hitconfirm into a full 4500+ damaging combo with reset.
This makes me happy because I can get a molotov summon setup two times as often, and with the plant setup, I have four or five chances for a tickthrow.