I wrote the post quickly … I’m going to get it tonight, too, since every time this topic comes up, comments like mine get attacked (by anecdotes.)
In my experience, I had not been able to get a substantive, interesting conversation with a date that lacked a degree (it’s all about TV stars, TV shows, pets, and her family.) Even with most of those who have one, I still have this problem. It is one my bigger dating frustrations.
I wouldn’t call it “nothing worthwhile,” I would call it “uninteresting,” which is a matter of personal taste, not a moral judgment.
Excepting rare people, not having a degree shuts you out of the labor market. I will not take the risk of a commitment with someone who is not onboard with the preparation and intent to pursue professional advancement (this is also a matter of lifestyle / values compatibility for me.)
I hope not - I don't see you wrote anything which should be attacked. I find your viewpoint interesting and wanted further clarification.
Many people will discuss those things because they are interested in them and may very well want your opinion.
I can honestly say that lack of a degree has not hindered my professional advancement. Perhaps you wrote 'excepting rare people' because you are not giving yourself the opportunity to meet said people and realise we aren't exactly a rare breed. 
(BTW - I don't mean to imply you should change your standards.)