We have received a number of complaints on our stance with downloading from YouTube.

We do not support circumventing TOS, EULA, etc here. Such threads will be closed and offending users will be penalised with infractions and warnings.

From the Youtube Terms:

9.1 With the exception of Content submitted to the Service by you, all other Content on the Service is either owned by or licensed to YouTube, and is subject to copyright, trade mark rights, and other intellectual property rights of YouTube or YouTube's licensors. Any third party trade or service marks present on Content not uploaded or posted by you are trade or service marks of their respective owners. Such Content may not be downloaded, copied, reproduced, distributed, transmitted, broadcast, displayed, sold, licensed, or otherwise exploited for any other purpose whatsoever without the prior written consent of YouTube or, where applicable, YouTube's licensors. YouTube and its licensors reserve all rights not expressly granted in and to their Content.
We are not a court of law. If you wish to challenge their terms hire a lawyer and take your argument up with YouTube. The arguments are inappropriate here as we do not administer their website. Any such complaints here will result in warnings and infractions being issued.