The OP in that thread made it quite clear in a subsequent post: We don't have a requirement to encrypt Youtube video because Youtube videos are outside the sco

The OP in that thread made it quite clear in a subsequent post: We don't have a requirement to encrypt Youtube video because Youtube videos are outside the scope of the policies we have that mandate encryption. Those policies prohibit the use of RC4 and because browsers don't allow varying the cipher support on a per-site basis, the result is nothing may use RC4. Because we don't have to encrypt the video and because Google doesn't support anything we can use we're left with the options of either finding a way to allow Youtube videos without encryption, or block Youtube on secure subnets.