Is this particular vehicle worth this BS? Is any?
Sorry again for your experience. There are MANY unscrupulous Kia dealers, unfortunately. There are a few with good ethics, but most of those are all have sold orders they are fulfilling. I wrote earlier that the sales guys will say anything to get you in - if you decide to find an unsold vehicle, then expect to pay above MSRP and don't go in without a contract. It's pointless.
The answer to your question is certainly "NO". It's a great vehicle, but there are many great vehicles, and if you can wait for your order to arrive, you'll enjoy it. If you can't wait, or decide not to wait any longer, then I'd just go find a different vehicle rather than call zillions of dealerships. California has received only 5055 Tellurides - behind FL (5531) and TX (5371) as of 12/11. Yet, CA has nearly twice the population of Florida. It will take a long time for the inventory situation to normalize.
BTW, five CA dealers are in the top 10 for allocations:
(1) Kia of Carson
(2) Kia of Cerritos
(3) Kia of Downtown LA
(7) Car Pros of Glendale
(10) Kia of Irvine
(33) Garden Grove Kia
Winn Kia are small dealerships.
The big dealerships above will be hard if not impossible to deal with, but they get the most allocations month after month. So, working with them might help you find a vehicle ... but it will likely be a very unpleasant experience as forum reviews for most of these dealerships aren't good.
It's tough right now... sorry again.