Don't forget the fact it's firewalling or null routing Akamai's CDN, which will cause seemingly-random services/programs to fail. There doesn't seem to have been a lot of homework performed either; some of those IPs resolve to host names that will be blocked by the HOSTS file changes. I came across one of these scripts with typos in host names which I submitted pull requests for, which were ignored, and then copied to other similar scripts...