I've been using uMatrix for some time (I'm a control freak, I guess) and I support this - you end up whitelisting a few sites here and there (or even just some aspects of those sites, in case of uMatrix), and the Internet becomes overall a much better (and faster) place. The amount of useless JS bloat on-line is staggering, and it hurts me that developers are actually defending this practice. Engineers should know better.