“It doesn’t sound like in his case he was mechaven that the al hamichya shouldn’t go on the rice. I think there is a big mokom to differentiate.”
Avadai he was – He writes that he was planning to continue eating the rice, so the al hamichya was clearly not meant to go on the rice. Also, he writes that the al hamichya was said on the Mezonos (meaning the regular Mezonos).
I have a lot more to say on the topic, but I have to go.