Nothing is "killing" STWOR.
Like every other MMO under the sun, the forum doomsaying debates are rooted in the fact that, for whatever reason, we gamers love us some hyperbole. In fact, in keeping with the spirit of the word, hyperbole is without question our single favorite thing in the history of ever. As a result, many of us are genetically incapable of moving from one home to another without claiming the old one will be destroyed in a hail of fire and brimstone.
In reality, of course, nearly all of those other MMOs continue to exist. In fact, they're doing pretty well for themselves with dedicated fanbases. Even several games for which one could make a believable case of mismanagement, horrible design choices or neglect by the developers are still chugging along and turning a profit.
We gamers also love us some analogies, so here's one of those too. If we gorge ourselves on prime rib every night for several months, the odds are pretty high that we're going to get sick of it and want grilled chicken instead. That's entirely fine, but we don't need to wave our arms wildly, claim the food is prepared terribly and call for the head of the chef, since sweet jeebus, he clearly doesn't know anything and will be out of business in a year.
Alternately, we could say "I enjoyed this for a while and it's a good product, but right now it's not my cup of tea, so I want to try something else", but we seldom do.
I've played MMOs since the original EverQuest and the routine has always been the same. Always. For serious. Every new game or expac has its honeymoon period, people get bored after a few months, and the vocal forum minority starts to trumpet new games on the horizon as the next big thing. Repeat ad infinitum.
At the end of the day, some of us will stay in TOR, some of us will try a new game and stay there, some of us will try a new game and move on yet again, some of us will leave TOR and eventually come back, and some of us will bounce between a few MMOs for variety's sake, and none of this DOOM DOOM FIRE DESTRUCTION FAILWARE TORTANIC BANKRUPTCY AAAAAUGH discussion will amount to beans.
Offer constructive feedback about what you like and what you don't, then relax and play whatever game you'd prefer. It's all good. TOR will still be here if you change your mind, I promise.