I sometimes argue loudly with Grammarly, but it doesn’t care; it still doggedly catches almost every error. Sometimes its suggestions don’t make sense and change my meaning. In that case, I just hit the little garbage can. That’s fun. I tell it frequently that it doesn’t know what it’s talking about.
Basically I agree you are correct throughout, but you may have "buried the lead" just a teensy-weensy bit, here.