To answer your first question, no. It is an anti-philosophy about questioning societal ideas, which includes anthropocentric ideas.

For your second question, the use of the word "dumb" put an interesting spin on your question. Normally I would suggest rethinking the language you use, to be less Ableist.

However in the context, yes, Egoism is about concepts which cannot be articulated. So yes, it a "dumb" question in a manner of speaking.