Great post, particularly because you abstract out 3 bits of wisdom, I find myself ranting pondering out loud in my work.
Here are a few:

1. Be honest about the time it takes (I take) to figure out technology and why one might be willing to invest it or not.

I can make a legitimate argument for say, learning a CMS. A person who wants to teach and doesn’t plan to retire in the next 2 years, needs to understand these kinds of systems. It’s a longterm investment. Think of cost-averaging.

2. Remain sober amidst the hype.

The lack of historical perspective in the ed tech world is interesting. Skinner’s teaching machine was supposed to revolutionize education, as was TV. The vast majority of content on the web requires basic literacy. The ability to read is more important than ever.

3. The market, not improving education drive educational technology advances.

Solve poverty and structural inequalities to improve education; a new widget is just a distraction.