User blog comment:Rappy 4187/Technical Update: July 20, 2016/@comment-69.61.242.46-20160802142905/@comment-126761-20160802153059

That's a good idea - I've just noted performance problems as a reason to reject JS on the help page. We'd endeavour to do it anyway, but it's a good idea to specifically call it out.

I'll bring up that JS with the team, in case it is somehow related.