Blue mage at patch 4.5

[Stanelis]

It does apply to all jobs, yes. But do you honestly not see a difference between a class where there are maybe 30% of their abilities locked behind (and some of them suck or are situational) and a class that never, ever, will get even the most fundamental amount of abilities without the person going far out of their way to obtain them?! And even THEN many of them are likely to still be situational?!

Blue Mage is in absolutely way worse position in terms of player toxicity than any other class. The question here is not whether that's true but whether it can be fixed.

It can, but that requires time and testing. And honestly...having players do the testing here is far better for all people involved. Players because that way any change can happen far earlier, developers because it's going to be a lot more certain result, cheaper with less development time spent on it in place of stuff that players cannot test properly.

Here are quick easy fixes to the issues you raise

1) just make it so monsters abilities aren't the only spells of the class (like in FFVIII with quistis),
2) just make it so you must have X spells learned to join a duty finder group, a damage dealing spell will be a damage dealing spell, no matter what it is, with how the battle system is designed, what will change will mostly be the skin's spell,
3) just make it so you need a level X0 job before you can play blu, so you need to have a basic grasp of the game before you can play blu (blu would then be thought as an "advanced" job).

Also I don't get this mentality where the game should be designed around players who don't want to progress. In a mmorpg, a bad player will be a bad player no matter the job/system. Also, LoL is an incredibly complex game, it doesn't prevent it to be one of the most played game of the decade.

Hell, even pokemon is a game where you need to pick and choose which abilities you want to use, yet it is typically played by children. Please do not think people are idiots.