'their school teaches them better'

18 year old people attend high school. Were they talking in past or current tense? Too many factors for this to mean anything, fam.

revealing the address of the hotel he and other yogscast members were staying in

This was addressed and dealt with when it happened.

sending nudes he received from fans to other fans without their consent

I've looked for evidence and have not found anything.

you are consumers of a product they are providing, nothing more, nothing less.

As someone who generally agrees with that school of thought, that's a very simple, one dimensional view typically reserved for more traditional media. This is not traditional media, and doesn't apply as much as you think it does.

Employment contracts will typically have a code of conduct the signature is expected to abide by, if they are found in breech of that, then the contract may be terminated.

Keyword is may - once again, it's ultimately the Yogscast's decision, the agreement simple gives them the ability.