What one learns in a CS degree is (ought to be?) considerably more and different from just "learning to code" so it's somewhat of a false comparison to put a CS degree alongside bootcamp and self-teaching.
The title is asking what is the "Best Way to Learn Coding" out of those options. You may learn other things as well but that's not the question the article asked. On that basis it isn't a false comparison - it's a limited comparison.
I think that asking someone with a proper CS degree if they "know how to code" is like asking a master carpenter if they know how to cut and sand wood. Yes, of course, but if all you wanted to learn was cutting and sanding then becoming a master carpenter was a waste of time and effort.