God, I'm still so upset about how shit Darling ended up being, the only good parts of the later half were when it focused on Hiro and 02. I remember keeping up with the threads on /a/, a great time of shitposting and fanmade content ala other series like psycho-pass, and the amount of rage that came out of that garbage ending was something else. Most people could start to see the writing on the walls in the last couple of episodes as soon as the fucking aliens showed up, but that final episode made it even worse.
It's also really funny that, fairly early on when shit started getting weird, reddit of all places made the proper call that if the show ended up bad all the trigger fanboys would claim it was A-1 pictures/cloverworks fault while if it turned out good only trigger would get praised. Saw the exact thing happen once the ending dropped even though the last 1/3 ~ 1/4 of the shows story stunk of trigger. Darling was also where my feelings really soured towards Trigger, after just coming off of LWA which I really enjoyed even with its flaws (I also enjoyed Kizanaiver despite Mari Okada drama and Luluco/Inferno Cop were fun shorts). I don't know, Trigger likes to rip off things from other media and hide behind it "just being a homage" when people point it out how blatant it is. Masami Obari, a man who loves to see his works referenced in other shows, expressed upset about Trigger just ripping off one of his transformation sequences as a "homage" in Gridman along with all the other references made without ever consulting him. The Kill la Kill ending is also just straight up taken from Kamen Rider OOO, no matter how much Trigger fans say it's just a homage it leaves a bad taste since I love the latter.