That would be nice and I think one of the reason why this crate exists is we can take advantage of Rust's performance. Since if we use python, most of the data downsampling step need to be done by other programs,but if we use Rust the downsampling step won't be an issue any more.

But the benchmark is still very interesting.

The benchmark will create a lot of traction.
There are many Python-based plotting libraries, matplotlib, plotly, seaborn, ggplot, altair, etc.
But if the Plotters can show the difference, many will start using Rust and Plotters for their Data visualization tools.