Hi. I maintain the library along with some others at Elastic. That warning is essentially us being good open source citizens and being very clear about how we maintain it. A lot of these other libraries are built specifically for their own products, no different then us. We just wanted to make it clear that the direction of the library and its maintenance is primarily driven by the needs of Elastic, rather than as some general community UI kit.
All that said, it certainly works fine as a general kit, and we build it with that practicality, it's just not something we officially support.
As far as stability, my team is pretty well resourced (and growing if there are any engineers interested!). We're using the library in many places around Elastic and its not going away anytime soon.
I've looked through most of the kits out there and they all have their pros and cons. Likely our biggest selling point is that it aims to be fully accessible and comes with a lot of fun charting libs. That puts its sweet spot for use in enterprise applications. It's also completely themable with about 8 lines of Sass variables.
All that said, it certainly works fine as a general kit, and we build it with that practicality, it's just not something we officially support.
As far as stability, my team is pretty well resourced (and growing if there are any engineers interested!). We're using the library in many places around Elastic and its not going away anytime soon.
I've looked through most of the kits out there and they all have their pros and cons. Likely our biggest selling point is that it aims to be fully accessible and comes with a lot of fun charting libs. That puts its sweet spot for use in enterprise applications. It's also completely themable with about 8 lines of Sass variables.