Irrelevant to anime.
Anime as we know it was invented 1963 with the release of Tetsuwan Atom. The critical part about that specific anime isfound behind the scenes.
The creator Tezuka Osamu invented various cost-cutting techniques, like having a 90s Opening scene and a 90s Ending scene; that's 3min you can reuse for every episode! He also popularized the production committee approach of funding, distributing the financial risk among a couple of large companies.
This approach essentially created the anime "industry". Prior to that there was no industry.
Thematically, anime of that time do not have much in common with modern anime, though. The roots of modern stories go back to Ashita no Joe (1970) and some contemporaries which laid the foundation for anime like Dragon Ball, Naruto, One Piece etc.
..and to Ursusei Yatsura (1981) which is essentially the grandfather of RomCom anime. Most of the themes that are still used today were introduced with Urusei Yatsura.
Of course, every genre has its own grandfather, but it all goes back to the 1970s and 1980s, while the technical aspect goes back to Tetsuwan Atom.