I'm not going to say that you're right or wrong, but seeing all of these people counter you with generic statements like "b-b-but it's an MMO" is hilarious, considering how many of them have praised WoW's singleplayer features in the past. Hell, one of the most loved features of Legion was the Mage Tower.
And there's at least two people in this thread who I've seen praise RuneScape on many occasions, which is an MMO with a singleplayer focus.
But hey, "those don't count" due to <insert arbitrary reason here>.