Earlier quoted context omitted.
Not allowing JavaScript turns into a chore when you find out that websites break in non obvious ways. I do not want to manually enable/disable JavaScript when the browser is a means to an end for me.
Yet another reason to do it -- so that bug reports about websites not working without Javascript are taken seriously, and fixed.
One of the funny discoveries was supported platforms and setup bugs are filtered very fast and just flagged as such.
The only monitoring was the up or down trends for that kind of complaints. It includes people on IE6, those using their fridge browser to open the site, or apps that showed the site under some broken in app browser. So people blocking javascript are just a drop in that global number, and if the number is mostly constant it just won’t matter what happens in it and reports won’t even get to the devs.