How common is Data Visualization near real-time for Big Data

I read an article in medium (yeah, I know this is starting bad) about data visualization for Large Data that went from using pyspark on the data warehouse to a plotly-dash dashboard, with a pretty sneaky toPandas transformation on the middle. This step was which I thought it was actually killing the idea of visualization on big data, but it is actually practical? Or everyone just filter the data to get a light representation?

article big big data dash dashboard data datascience data visualization data warehouse medium near plotly pyspark real-time thought transformation visualization warehouse