I don’t really have any personal experience with Space Battleship Yamato, but that doesn’t mean I can’t acknowledge its influence. The original show came out in the mid-70s, and is credited for at least partially heralding a new anime boom, where shows specifically aimed at children were now joined by dramatic, long-form sci-fi epics courting an older audience. Its true influence might be somewhat disputed (Jonathan Clements, for example, theorizes its influence is so heralded partially because it happened to be in the right genre space to catch the eye of people writing the anime history books, a very reasonable critique), but it’s undeniable that many future creators were inspired by the adventures of the Yamato. Even Hideaki Anno states that the original Space Battleship Yamato is his favorite show, and the reason he initially pursued anime.