Same as any security: making an attack more expensive to mount means people are less likely to try it. If high-resolution timers allow you to mount an attack in

Same as any security: making an attack more expensive to mount means people are less likely to try it. If high-resolution timers allow you to mount an attack in the three minutes the target takes to read a listicle page, then rounded timers require the target to keep the page open in the foreground for 3000 minutes, or 50 hours. That's much more difficult to do.