It might be a countable/uncountable noun thing, lol. Like, I wouldn’t consider Dan Da Dan s2 to be “a new show” but i would consider it to be “some new animation”, if that makes sense. “Anime” can be used in either sense and since it doesn’t change when pluralized it can be hard to tell which someone means. At the same time, I stand by what I said that “[x show] is returning and it’s still very good” and “[y show] is new and it’s very good” are statements with fairly different target audiences.