Kubernetes is a whole new area that we follow closely as it is definitely the future.
It comes into place and to its real power however on more larger installments - like when your site runs on multiple servers (cluster) with load-balancing, fail-over etc.
Currently our users have more than plenty on a single server that can be easily upgraded.
Deploying to multiple server is more complex issue that Kubernetes solve. However as with every power it comes more responsibility - so the process becomes much more complex.
Many providers like Digital ocean and Linode already offer managed Kubernetes to make this more easy (but also to let you buy more servers 
)
So as our user base grow we will definitely grow also in support for cluster deploy solutions like Kubernetes and maybe even go to new grounds like “infrastructure as code” with solutions like Terraform.