While not Manim generated, I came across this video explaining Bezier curves yesterday and thought it was pretty awesome.
It reminds me of the way websites evolved around 2005-2010 to start to take design seriously, not just on specialist web design sites but on major news sites and search engines, etc. Part of it was "Web 2.0" and then Bootstrap style CSS frameworks and the maturity of browsers as IE6 died off.
And in the spirit of sharing a bit of the ‘how it’s done’ - obviously while Grant uses Manim, Freya uses Unity3D and her ‘Shapes’ library [2] to produce her visualizations - she also streams a lot of her dev work so if you want to follow along with how it’s done, that’s another avenue to look at.
1: https://www.3blue1brown.com/blog/some1
2: https://assetstore.unity.com/packages/tools/particles-effect...
I expect with the quality of videos that are now being churned out, that the "education gain coefficient" between old style lectures and brilliantly produced video content would only have increased further. (Of course this only works in practice if you're engaged with the video, which is also true for lectures).