I appreciate the effort that you have gone to and you are indeed correct.
No real effort, it's just that your constant, albeit mistakenly consistent, misuse of the terms "light green" and "dark green" to refer to the Silom and Sukhumvit lines today, confused me, and and I'm sure confused others.
Like I said, I am fairly certain the posted map from Archstudent is similarly flawed.
It would be worse on ThaiVisa, where that strident and pedantic lady, LakeGeneve, would have lambasted you no end.
I hope that clears up some of your confusion that you gained from reading an article with incorrect info?
Yes, absolutely. I had no idea that the information contained in the article was incorrect until you said as much with your thoughtful response.