For clarity, Tarsius is not the original creator of Magit, that would be Marius Vollmer (https://github.com/mvollmer). Tarsius is "just" the current maintainer and most prolific contributor. I'd strongly recommend contributing to the kickstarter if you use Magit, however. I donated $100 and felt that was not near what it's actually been worth to me. Don't think that just because it's fully funded you shouldn't bother, there's good reason to keep contributing: https://www.reddit.com/r/emacs/comments/71viq3/the_magit_kic...
Indeed I would not have created Magit from scratch. From the campaign description:
"I would like to thank [Marius] and the maintainers who came later, for I would not even have known that I needed something like Magit had they not laid the groundwork in the early days of Git."
Not trying to undersell my own work - elsewhere I also write:
"Despite all this, it would be wrong to assume that Magit started out with a predefined set of interface concepts and abstractions, and all that was left to be done was incrementally filling in the gaps."
Personally... this looks confusing... perhaps just an Emacs thing, but I couldn't follow what was going on in the video. Or perhaps the yellow background really threw me off.
The video is indeed... not so great. I would go as far as to say that this might be the Kickstarter campaign with the crappiest video that ever succeeded.
But at some point I just had to launch instead of continuing to hope I would eventually get around to launching the perfect campaign. I did however make an effort to give non-Emacs a better glimpse into how Magit works using a few articles listed at [1]. You might also want to check out some of the screencasts that were created by users [2].
Edit: Kickstarter campaign going on with 23h left https://www.kickstarter.com/projects/1681258897/its-magit-th...