It should be a timeboxed block if anything. Most RSS users are actual readers and expecting them to spend lots of time figuring out why clicking "refresh" twice on their RSS app got them blocked is totally unreasonable. I've got my feeds set up to refresh every hour. Considering the small number of people still using RSS and how lightweight it is, it's not bad enough to freak out over. At some point all Rachel's complaining and investigating will be more work than her simply interacting directly with the makers of the various readers that cause the most traffic.