"And, you know, there is no such thing as society. There are individual men and women, and there are [corporations]. And no government can do anything except through people, and people must look to themselves first."
No, it isn't. Thatcher spoke about individuals and families, not corporations. And the sentence is of course a hyperbole which should be seen in the context of a longer speech.
Yes, she was a divisive figure, but has nothing to do with this Youtube thing, really.