Saying Evangelion isn't big is like saying Minions are some irrelevant little flick. Evangelion is quite possibly the biggest series in Japan for 3 decades running. You won't find a person who has not seen it to some extent. Evangelion goods are sold everywhere at all times. You really cannot escape it. For the biggest series in Japan to use Blender is a huge sign to the rest of the industry in one of the most risk-averse countries that yes, it's good enough.
A relevant opportunity may not occur again so here is a great video by Red Bard on whether it's possible to live entirely off of Evangelion merchandise: https://www.youtube.com/watch?v=_0Qr9rztRw4
The same way Star Wars was still running in between the original series and the prequels. It had an active fan base and lots of side content that was constantly being produced.
