I guess it's easy to type it out on the keyboard.

How long did it take you to learn a language to arrive at a level where you can watch a movie/TV program with tons of idioms and cultural references and easily understand > 95% of it?

Not who you were asking but for me about 1800 hours of study+srs+reading+listening for simple shows (not "tons of idioms". Or at least not ones Im not already familiar with). This was for japanese, european languages should be easier.

A few years (I'm a slow learner), but it was worth it because of the sheer amount of Japanese content that I consume.

そんな暇ねぇよ

アニメーをたくさん見られる暇あるなら、勉強する時間だってあるはずだぜ。