The original post definitely describes a lot of what I've seen, and experienced, over the years. (Both on the giving & receiving end of being ignored and/or wrong.)

And if it makes you feel any better, regarding #3, I was once the young programmer, and I was right. But was I able to convince people that I was right? Well, no... “Old age and treachery will overcome youth and skill” indeed!

And regarding @Jerri's comment, a thought: it must be a sign of the times to mention Mark Zuckerberg. Back in the day, the example people would throw out was Bill Gates dropping out of Hahvahd... Getting old, I guess... :-)