When it comes to discussing legislation being voted on in a countries legislative body, will you be asking, "And how many laws have you voted on?"
In your analogy, he isn't the voter, but the legislator, and it's perfectly valid to ask the question "and how many laws have you passed?"
2. shanev's post was expressing an opinion of whether or not breastfeeding is superior to formula-feeding. Is someone not allowed to have an opinion on the subject matter?
3. shanev did not 'command' anyone to do anything. He/she is stating the babies should be breastfed, which, in the context of the post, is just an opinion.