This game does suck. It has had server and ping issues since its 1.0 alpha. We have progressively lost dungeon content as more expansions have released for more casual content which most is very mediocre at it's best. Tanks and healers have become extremely homogenized and the classes are really more like roles than classes. Some classes have been needed a rework for a while and some have been reworked into something worst than it was before. And we are currently dealing with the worst launch since 2.0.
The community is full of weirdos that worship yoshi as if he were jesus for taking a bad game and making it decent. They are often more concerned about new glamour and hairstyles rather than issues with the game that should have been fixed a long time ago. They are also fine with loosing content in place of other content. And it's the only game community that is accepting and actively defends a cash shop.
Hope I have compensated you.
That being said time for my compensation. A lot of this whining is coming players that just recently came over because their favorite streamers decided to play the game. And sadly video game hype is synonymous with streamer hype today as most people can't think for themselves in our new internet culture. Your lack of thinking for yourself and following the crowd/hype has impacted my experience as the game has almost tripled its sub count with in one year. Which this number is not a small number we are talking 10 million subs to almost 30 million subs. There are going to be issues unfortunately and I am dealing with them just as everyone else is.
As far as the complaints go about advertisement on a game that is going to have launch issues. This expansion has actually been advertised the least of all the expansions I have seen released so far. I remember Stormblood was heavily advertise to where I would get a Stormblood cup with my Big Mac for no additional fee. Most of the advertisement has come from stream hype as honestly I don't think I have personally seen an add for Endwalker yet.
Could SE have avoided these issues? Absolutely but they did not react quick enough to do so. I think SE should actually suspend sales on the base game until the issue has been resolved as there are people that have bought the game and expansions and are unable to even create a character.
I still play it though and actually think it is the best MMO on the market currently.
With that off my chest I feel I have compensated myself for my rage as well.
Edit: On that note I am not understanding why a player that is still level 50 and joined the game in 2013 is complaining. You obviously are not even playing the game currently so why are you flooding the forums with complaints about a launch you are probably not even participating in?