In an answer to the question about what characterises the difference between data science and statistics, the main differentiation referred to
Data collection, Data manipulation, Data scale, Data mining and Data communication
The latter being defined as "helping turn "machine-readable" data into "human-readable" information via visualization".
This suggests (although not necessarily implies) that the visualization is located at the end of a data processing pipeline. In contrast to that, the field of Visual Analytics refers to coupling the analytical process with visualizations in order to support reasoning and decision making.
So my question is whether visualizations that support the knowledge discovery and extraction process are considered as an integral part of data science itself? Or to put it that way: Are questions about visualizations and visual analytics appropriate for the Data Science site?