I am confused about the focus of your article. The title is very broad/vague to me. And after reading, I cannot tell if the topic is about automation, types of physical connections, communication protocols, industry standards - or the lack thereof. Automation is much more than IoT as you say that in the body, but the title does not suggest that. And you seem to suggest in your second paragraph the connection for IoT automation must be over "Ethernet" - which implies wired. That's obviously not the case.
Your third paragraph is monstrous addressing many topics and should, IMO, be split into several paragraphs.
You say you have been asked many times to write about automation and IoT. I suggest you pick one, narrow focused aspect and write just about that. Then pick another aspect and address that. You can perhaps do it in a FAQ format instead of all at once. For example,
Q1 What is this IoT I keep hearing people talk about?
A1 IoT stands for the Internet of Things and was defined by the Global Standards Initiative as "the infrastructure of information society" for the control of remote devices... and so on.
Q2 What is automation?
A2 The use of various control devices or systems for operating equipment...
Q3 What is CEC over HDMI and how does work?
A3 CEC (Consumer Electronics Control) is a feature of HDMI allowing users to control the function of up to 15 devices through a single remote... yadda yadda.
As you correctly noted, the various technologies involved in automation are rapidly changing as requirements change, develop and are better understood, and as dominant technologies emerge as the new standards. If done in a series of FAQ articles, you can not only add a narrowly focused FAQs in an orderly fashion, you can easily go back and update the articles to keep up with the times.
JMHO
