From a scifi standpoint, Evangelion is shite, they never explain how the cyborgs work, neither do they go into detail about the cool weapons and/or the biology of the angels and where they came from (probably wasn't even the point to begin with). However, the original TV Evangelion series is good insofar as there is something of substance there to think and talk about, as opposed to the vast majority of harem/isekai/"hurr durr lookatde pretty gurl" cookie cutter copes for male alienation that get shat out by the industry these days. Unlike these anime, there are "realistic" reasons for why a character is annoying/weird.

The rebuilds on the other hand, are another story...