>>150878089
It aired at the right time. Most things releasing between 2012-2016 got a fanbase, with how mainstream online fandom culture was becoming due to increased social media usage from smartphones and fandom websites like Tumblr.
The show didn't really gain traction until there was "hype moments" like Lapis' debut in Mirror Gem/Ocean Gem, and then the fanbase really exploded with Jail Break.