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One unironic concession I'm willing to give the old anime faction is that old anime used to at least pull an ending out of their ass if their source material was ongoing.
Y'know, because a story needs a beginning, a middle, and an end.
The most famous example is FMA 2003. When the souce manga finally finished, that's when FMA:B was animated. And that's why there are two different endings.
The new meta is to intentionally not finish an anime's story to drive up sales of the source material (anime is expensive and paper is cheap).
The most famous example being Haruhi (season 3 reeeeeee Or at least animate the fight against the anti SOS Brigade).