The thing is, these aren't all linked together and transports don't go to every area on Morrowind's map. Players are able to commute via a network of silt striders, boats, and magic. There are a few options for traveling in Morrowind aside from walking. Related: Elder Scrolls: Why Morrowind Is STILL Nearly Everyone's Favorite
By today's standards this method is rather inconvenient, but it's also creates another layer of gameplay. However, without that instant travel players are forced to learn the lay of the land and remember what every route leads to in Morrowind's overworld. Skyrim gives players the option to essentially teleport to any location on the map that has been previously uncovered, which is great in its own right. The Elder Scrolls V: Skyrim might have been efficient when it comes to traveling, but it lacks the design elements present in Morrowind. Traversing the world of an Elder Scrolls game is a key aspect in their entertainment, as they are designed to encourage discovery and exploration.
Bethesda's The Elder Scrolls III: Morrowwind has the best fast travel system in the series.