It takes having played previous games (or a lengthy period here) and looking back on the community (and yourself) to really come to that conclusion and fully understand it. Skill trees and other such customization options that impact actual performance is an illusion of freedom in MMORPGs. I mean, people will chew you out for using very simple OGCD macros here that barely impact output, such as the beginner's macro for BRD that only has Misery's End and Bloodletter in it. Even if you intend to only do, at most, normal mode raids and never go into Savage and most Extremes, people on these boards will still see you as trash for even thinking about using a barely harmful macro lol. That 10-50 DPS loss is going to wipe your Neverreap party because you're using a macro! Don't do it!!1! People are stuck in a one-track mind when it comes to the freedom of choice and playstyle. These parties are generally not willing to compensate or adapt.
In theory, stat/job customization is great. Just like how, in theory, devs could create content and not bother with punishments or rules that centers around players behaving, trusting that no one will exploit or cheat in any way... dat Wolves Den and Triple Triad win-trading fiasco might have a say on that one. The thing is, with the stat/job customization, it falls into cookie cutter builds because of clueless perspectives or because people want to know the best way to do something. People don't want to be a burden upon others, so they'll look for what makes them perform the best. People want to be strong, so they'll look for what makes them so. Two perspectives for the same side of the coin. Both results in cookie cutter, hence the illusion of freedom. Although a different situation, just look at the meaningless stat customization we have already lol. For most players, it's all in on one stat alone. Heck, even if those were to include secondary stats, it'd be the same thing... all in on what is the best option. Players will typically look at someone not spec'd "properly" as some sort of personal offense because they look at it as this player is intentionally making things harder for everyone else. Making a villain out of someone for a stupid reason, albeit one that does have an impact in a very small amount of content (Savage, etc).