The card counting game would not be easier even if you do it online.
As mentioned in the article, the problem for players here is when the casino uses a continuous shuffle machine. They do not need to see your face live but they will make it impossible for you to count. You can find more reasons why it's going to be difficult in this video by blackjackapprenticeship
https://www.youtube.com/watch?v=sPvxe40Nr20 It is also mentioned in the video that legitimate card counters don't even try to beat online casinos since the playing conditions are too poor and not worth their time.
.... But in online casinos, we don't know how the cards are shuffle....
He probably means watching a live dealer from the comfort of your home.