i can attempt to answer this but i've forgotten some of the drama from when it first started until now. some of this also seems to be unrelated to birdie-centric drama and instead some of the animation meme community as well. however, i feel like a good portion of it is still related to her. the parenthesis after just show which scribble i'm addressing.
- the first real birdie drama that i remember was her being exposed for drawing nsfw of sleepykinq/twisted-doctor, then doing the same with kittydog. (sleppy king (mr. E) & kity DOG)
- one of the many animation meme creators that has some sexualized content. the "joke" here is that the caption refrences darlinqq, who is a close friend of the yeagar, who owns the character drawn (dar link wait no thats eager & im assuming DAR LINK (oc name ikea) as well)
- addressing the sleepykinq drama and how her oc, polly, was 12 and she shipped her with mystery, who is said to be 40+ (bird E)
- birdie presumably left her main/rebranded <powerlevel>(i cannot remember which)</powerlevel> with a new oc as her icon and, supposedly, replaced polly (01010100101 1010100101 11 0 (STRAW BERRIS))
- another animation meme creator that has some sexualized content. i'm unsure why she's drawn here aside from being a known creator. (ROSS a ly)
- someone with "toxic" in their username (toxali i believe? i'm probably wrong though) was known for hacking into animation meme creators' youtube accounts and leaked information from private conversations/google plus chats. (toxic GUY)
- sleepykinq's/twisted-doctor's boyfriend, who i believe birdie was jealous over back when she was obsessed with sleepykinq. (PRICE CHAN (recks))
- yet another animation meme creator that has some sexualized content. he's responsible for some "13+" memes that involve characters shaking their asses around and using hotdogs are innuendos for dicks. (SCOTT (goat) Goat)
- some art community ranting channels. spoctor theory has since made his content broader and less harsh as it had been in the past, pentagrin and stories have both been canceled, and i'm unsure of atari's (?) status. they have all made videos about birdie's behavior in the past, essentially calling her out and bringing light to the drama. many channels and people have done this aside from them but they were some of the most popular creators at the time. (soccer theory, Penthouse, STORIS, & ATAR E i made the drawing too big)
- an animation meme creator who was known to be a pedophile, had child porn made for him, and traced over art. i belive he also stole ocs as well. he was arrested in august of 2019 for possession of cp. (cristal EYE)
- an animation meme creator with over 1 million subs and was one of the biggest back in 2018-2019. her content shifted slightly to storytimes and whatever else. (DOKI DOKI LITERATURE CLUB ANIMATION MEME BY WOLFYCHU ON YOUTUBE...)
and i do agree that the op needs to be reworked. there's a lot of information surrounding birdie that simply linking a timeline does not cover. she's been a topic of many, many drama videos back from 2016-2018/2019. she's on level with people like tearzah for her infamy in the animation meme community because of all the drama and just how fucked up she is.