IETF web site behind CloudFlare

Hi IETF,

It seems like www.ietf.org is behind CloudFlare:

$ dig +short www.ietf.org
www.ietf.org.cdn.cloudflare.net.
104.20.1.85
104.20.0.85

This is sad because it's now not possible to visit the site without
accepting JavaScript. At least if you get selected for solving a
CAPTCHA. Tor users is one group of users who are selected.

Is this permanent?
Will it hit more domains than www?
Where can I read about the decision to hide www behind CloudFlare?

Thanks,
Linus