EV includes buses, if buses have nothing to do with cars, why the report says anthing about them in the article in the first place? It's ok for you to believe what you believe, but that is also true for others think otherwise.
If people start buying Bus as passenger vehicle, then yes, EV in this article include bus.
The article is about "PEOPLE" buying habit, no one will own a bus for private use, so no, you are wrong.
Again, read the whole article again, ONLY 1 SENTENCE is about bus, and that is "Shenzhen have 100% electric bus" and that is to drive home the point Shenzhen is the home of BYD.
It is pretty obvious this article is not talking about bus, it talked about why PEOPLE, not company, buy EV and compare to Passenger Vehicle manufacturer such as Toyota, BMW, Tesla and Volkswagen, all of which DOES NOT have a heavy commercial vehicle department.