“Quinoa is not Kintiyot. it is not a legume its a berry”
I am glad that we have your psak, however there are real rabbonim who say that there may be reason to include quinoa in kitniyos. Ask your Rov.
But the distinction that you make, that kitniyos are solely legumes, is silly. Rice is not a legume, and everyone agrees that rice is included in the minhag. You love to comment that some consider potatoes kitniyos, yet potatoes are not legumes.