Nobody will fault you for learning programming through an online course. They will, however, mark you down for listing that on your resume as your sole programming experience.
People within companies are all different, so we can't say.
Some hiring managers might, others actually prefer no degree, others might focus more "shipped".
It depends
To be clear I'm speaking generally, not on an individual basis. Everyone has their own preferences–I personally don't discount it. But in my experience the average hiring manager does, because certifications are often seen as a thing you just pay money for to get a piece of paper. Of course college degrees are like that too, but the quality of "big state school CS degree" is usually somewhat regulated and "big state school 6 month CS certification" is often not.
No, I know about the courses. They're pretty good. I'm just saying that there's baggage attached to certificates from random courses, even if some of them are good.
People within companies are all different, so we can't say. Some hiring managers might, others actually prefer no degree, others might focus more "shipped". It depends