Bethesda practically said the opposite.
They enjoy SP games that are too involved and persistent world to allow MP very well without it being tacked on and half ass
Of course they said that - they released a single player title, and you don't do statements like "uh, yeah, but we don't care for that, really". If they ever release an MP Elder Scrolls game, they will happily say that this was what they'd wanted to do for a long time, and that MP was the best thing ever since sliced bread. Welcome to the world of PR.

The same with the Todd Howard quote - their hearts are in the games they're currently doing, and if that would change, their hearts would migrate.

Not that he's lying or so, I do believe that they want to do games like current ES titles, but it ultimately depends on their success.
That being said, I don't see MP coming. Skyrim apparently sold spectacularly well, and that's what counts. There would be reason to worry if an ES title bombed, but until then, they'd be stupid to change an obviously winning team.
Co-op multiplayer (even Baldur's Gate had that, albeit quite clumsily, but it's ancient history) might come some day - with companions and mercenaries playing a much greater role (or anything at all) in Skyrim, there's the foundation of what that might feel like. But doing a full WoW - nope.