Given that internet and phone data speeds have increased exponentially since the inception of the "Progressive" option, the page load speed gained by progressive jpegs has largely lost its significance.
If an image is correctly optimizedoptimised using the "Baseline" option (especially small to medium sized images), there is little advantage. This is especially true when you consider the downside of "progressive", i.e. multiple HTTP requests which will also have a bearing on the page speed.
That is why it is recommended to combine all CSS files into one file, and likewise js files, in order to minimizeminimise the HTTP requests.