I hate to be that person, but why is it so exciting to exchange our privacy and freedom for a shiny piece of software? What's so wrong with Firefox + PhantomJS?
I agree with the sentiment. However an issue I had using PhantomJS is that it doesn't support modern JS rendered sites ( doesn't support much es5 at all it seems) I needed to create a pdf from such a site and couldn't get PhantomJS to do it. Headless chrome saved the day.