Might as well complain about the game, since complaining about games is pretty much the point of the Codex.
First and most definitely foremost, there is a massive wall of extremely boring fetch quests between the new player and the endgame—which, because this is a sushi-flavored blatant WoW ripoff, is the only place to genuinely progress, turn a profit of any kind (with a couple of exceptions), or actually play with other players who aren't just a bunch of random strangers who never talk and might as well be (usually shitty) bots.
There are in fact 572 Main Scenario Quests from the beginning of the game, through the expansions, and up to the end of the current patch, +/- 1 or 2 quests depending on your starting city. This figure doesn't include tutorial quests, class progress quests, side quests to unlock aether currents (needed to fly in large zones designed for flying mounts), relic quests, important side quests to unlock various advanced functionalities, important side quests to unlock various dungeons and raids, etc. With those included, you're pushing 700 boring-ass fetch quests, and all of them just to catch up with veteran players and BEGIN to grind for your endgame equipment.
Note that almost all of these quests are pretty much solo. There's little to no point in teaming up for most of them and you aren't even allowed to team up for some of them.
On the plus side, you can pay SE $25 in exchange for an item from their cash shop allowing you to skip MOST of this garbage, except for the 100+ Stormblood/current patch quests. What a deal!
To be fair, I earned many millions of gil cherry-picking the bestselling post-ARR quest rewards and selling them on the MB, so there is that. However, these quests are so boring that I've heard MANY anecdotes indicating that people's friends have quit when they reached the infamous, exceptionally shitty Seventh Astral Era line.