Phoenix, I like you, but YOU.DON'T.KNOW.SHIT!
Elfen Lied is bad and I definitely hated back when I was 17 and hate it now at 30. Yet, there is so much worse. You just have not seen them.
Anime/Manga worse than EL:
Genocyber - Yeah, prepare to be even more shocked.
Inuyasha - All of it.
Akame ga Kill - Not by much, but the TV version drags more and acts as if it's trying something new.
Love Hina - ....Nothing further.
Desert Punk - You will hate everything.
Black Lagoon - Nothing, but gangsters and wannabe gangsters and their overblown, try hard, nihilistic rants that proves nothing. Literally almost all the characters go on about how shitty the world is. I know you're not supposed to agree (with most of them), but sometimes the anime/manga can't make up it's own fucking mind. The only characters I like are Fabiola and Garcia, because they're the only characters that have some actual fucking standards compared to the cast.
A Wind Named Amnesia - Another anime that thinks it's smart, but is really up its own ass.
Shaman King (manga version) - After the 5 year hiatus, the writer got a I-hate-humanity-bug up his sphincter. The latter ending of the manga thinks it's being good or profound when it's just another shitty Green Aesop and human being "evil, incompetent, or impotent". Almost no good examples, no grey areas. Which is really hypocritical and insensitive when you of your characters (despite being the most powerful of the boys) is a walking black stereotype with the blackface lips and name. Fuck the author!
Ninja Resurrection - Japanese Jesus gets resurrected as Satan. I shit you not! Also, the series never finished because the production ran out of money.
Junk Boy - A really shitty and unfunny comedy.
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Bebop was and still is bigger than Naruto (only in the early stages) and Attack on Titan. Bebop is known by most of the old-school and a good amount of the new school. It's just that some of the younger new school are only interested in shounen stuff or isekai. This is nothing new as the cycle has always been there.
Baccano I could never get interested in. Tried, but did not work out.
Here's some anime recommendations for you:
Monster - Is about a Japanese neurosurgeon, Dr. Kenzo Tenma, saving a boy name Johan in West Germany from a head shot wound. The boy grows up and later becomes a serial killer. Saying anything more would spoil all of the surprises. The series starts in the 1980s and ends in the mid 90s.
Michiko and Hatchin - Takes place entirely in Brazil. An escaped female convict tries to help a little girl find her father. Some of the same team that worked on Bebop and Samurai Champloo worked on this. Nowhere near as good as either, but an entertaining watch with some heartwarming moments. Even better, it's a non-Japanese setting where most of the characters are black and/or latino. And without the cultural or racial stereotypes. Which proves it can be done, it's just certain anime/manga creators are lazy to do this. Luckily, this is less of a problem now, than it was back in 80s, 90s, and early 2000s. But it still happens from time to time.