>>150460122
Barbara Gordon's cultural image is Yvonne Craig in Batman 1966. There were murmurs of bringing her back as Batgirl for years, Paul Dini was geared up to bring her back as Batwoman, the Oracle thing wasn't totally set in stone.
Jason Todd's big cultural impact was his death being covered by major newspapers across America. NYT, LA Times, Washington Post.
It was also about sales. Paul Dini told a pretty big fib to Wizard (or maybe it was Comic Buyer's Guide?) that BTAS Tim Drake totally has nothing to do with that loser Jason, and all similarities were coincidences. Real comics fans know that Jason sucks and Tim is better, the comics told them so.
Years later on the DVD commentary for BTAS, Dini says well duh obviously we based this character on Jason Todd, but we had to use Tim Drake because that's the current Robin in the comics. Of course. Anyone with a brain could put that together.
It wasn't such a rule back then but at least after the Schumacher controversies, DC started aggressive campaigns to convince comic fans that filmmakers actually care about the comics, and every new big budget adaptation is the most canon-accurate love letter to comics yet!
It's total bullshit, but DC fandom is full of idiots who just care about labeling things as canon or uncanon based on canned statements without actually using their own brains. They're a pressure group with disproportionate influence on publicity, really good at obsessively regurgitating word-of-mouth marketing for good or for bad, so you try to feed them the right formula when possible.