You seem to be missing the point here, it's not about any individual character. You in fact just pointed out an example of the poor writing, you saying Alisae says "Okay we aren't really trusting her are we." However the actions taken by the entire group and the next few cutscenes just ignore that statement. As I said in my previous comment, one of the tells of bad writing is telling not showing. Alisae tells us how to feel instead of the story showing us how we should feel. They just blurt out emotions then act contrary to those emotions, or they just completely change in personality within the span of a cutscene. Alisae barely spent time with Wuk for example, yet is now calling her lami ti, Alisae, one of the most emotionally guarded characters just decides I'm BFF with this person I've functionally barely met and had very few scenes with.
Again this isn't about Wuk or Sphene, It's all the characters, the way the story is paced doesn't allow for any functional character development, so the writing just has characters respond to things in specific ways for the sake of this plot point, even if that response would be out of the established behaviour for the character. Bakool, is a monster for most of the story, He believe might makes right, the weak have no purpose. He's not just slightly bad, he's out right evil. He starts of with threatening the exam proctors, sabotaging rivals, then he escalates to kidnap and threating the life of his sister, then he escalates again by freeing a creature that's could wipe out thousands of people, then he finds out about his sisters bio dad reveals this to her to emotionally traumatise her and then threatens to kill the man. He then has a 2m cutscene where he explains his sad backstory and when next we see him he is willing to potentially sacrifice his life for those weaker than him...... complete 180 of the character, no arc no development no meaningful introspection. Just I had bad things happen ok I guess I'll be good now.
That's not personal taste for the character that's just poor writing. It's all over the story, Erenville and Wuk are childhood friends, really, because they certainly don't seem like it with any of the ingame actions or dialogue, other than when we're just flat told, Wuk and Erenville are childhood friends, to reiterate, you should show the audience not just tell them.
You're wrong and here is why. In 1.0 FF14 had such a tiny portion of the market no where near a good level of saturation, being bad is less impactful when you're small. Also 2.0 was not amazing, it was just amazing considering what came before, don't get me wrong it was good but it was only comparatively good. They still never truly cleaned up 2.0, the low level leveling experience is still accepted to be a colossal barrier to entry. SB wasn't something they needed to salvage, some people were critical but generally it reviewed ok, by all measurable metrics SB is significantly better then DT. The difference is now, FF14 is a big guy in the world of MMO's they have achieved good market saturation, everyone has at least now heard of it. The thing they have heard of though, is it's got a well written story. Well, now being that big plays against them. Everyone who heard about the game will now also here they've released a sub par story that's poorly written. This of course damages the brand, because who as a new player wants to be told, you've just got to get through ARR MSQ, then it's good, until the latest expac and then it's not very good again. Also people are always remembered for their latest release, 6.x was not well received there were lots of complaints about the story so people start to see it as a down trend in writing standards when you release and expac that's written even worse. Then tack on that satisfaction about how the jobs play is at an all time low.
As I said they could potentially salvage some of this if the post patch is great, however their main competitor is about to drop an expac next month, FF14 has lost alot of good will with it's community over the job designs, and the bad writing, they are going to have to hit this absolutely out of the park, this is a massive up hill battle just to recover what's been lost. Damage to the brand image is not saying they are going to shut doors, what it really means is SE might start making sweeping changes or they might decide that the companies future shouldn't rely on the MMO and reduce it's budget, no one knows how the execs will respond, but there's going to be some substantial in house discussion about this.