I don't know how supportive this version really is. It's like "I'm a gender dysphoric trans boy and I want to look like a boy" – "No, you are a beautiful girl. Facts don't care about your feelings" but maybe I'm over analyzing
Bacteria don't have sexuality. They copy themselves if you will and exchange small bits of DNA rings with each other but they don't have sexes individuals belong to
Single cell life doesn't have sexuality, not even all multicellular organisms do. And there are lifeforms like plants that throw around their pollen and hope that pollen of the opposite sex meet or make insects or alike distribute their pollen to other plants. That's sexuality in the biological sense, too
It's no definite proof, it is just very unlikely that they can remember their former partner but can't differentiate between sexes. They look all the same to us but not to them.
Someone else debunked my comment but they still more likely go to their old partner so they seem to remember them
Excuse my ignorance but is COBOL still spoken there? Sometimes language islands survive you wouldn't expect