Anarchist idiots

[Nope]

Perhaps someone can answer this for me, in an anarchist society how would the weak and vulnerable be protected? Maybe I am misunderstanding how anarchy would work but wouldn't the strongest just dominate the weaker members?

Just as with communism, they're not taking human nature into account. They were hoping for humans to behave without any rules, which is totally absurd, of course. And in their vast majority, they're anything but communist. That's a pretty good wiki page on the different forms of anarchism and what they wanted society or better, the absence of society, to look like.

Anarchism is a political philosophy that advocates stateless societies often defined as self-governed voluntary institutions, but that several authors have defined as more specific institutions based on non-hierarchical free associations. Anarchism holds the state to be undesirable, unnecessary, or harmful.[9][10] While anti-statism is central, anarchism entails opposing authority or hierarchical organisation in the conduct of human relations, including, but not limited to, the state system.

https://en.wikipedia.org/wiki/Anarchism

Thank you