I suppose that they are saying that CockroachDB is a single binary which you just drop on a machine and you are good to go. For ScyllaDB you need to install Java, Python and several ScyllaDB related packages.
Sorry, that was phrased poorly; was in reference to the parent comment’s “For ScyllaDB you need to install Java, Python and several ScyllaDB related packages”.
Just meant to say it does have tooling which requires other languages/environment specifics.