>is used most of the time with svn
It supports mercurial, git, and svn.
>I 'm curious why they opted for it in the first place, instead of a more modern platform.
It is a modern platform and works well.
„We solved an issue we created ourselves”.
Which sometimes is ofcourse what you have to do.
I was new to Phabricator, but I picked it up quickly. Even though it might not constantly pump out new features, Phabricator gets the job done.
Only very recently. Obviously after Uber adopted it.
> from what I remember and is used most of the time with svn
Nope.
> I'm curious why they opted for it in the first place, instead of a more modern platform.
Because it's quite good? It's not some archaic thing like SVN for which there's an obviously better newer option.