In order to prevent spam, WordPress requires a name and email address from commentors.
But you don’t have to tell the truth. The WP site says so:
Comment author must fill out name and e-mail: This prevents people from leaving anonymous comments (however, people could still use a fake name and e-mail address).
I’ve been doing that for years with comment systems like this, without a problem.
Plus, I never edit comments, however expressed, unless irrelevant spam. Way too much of that schoolmarminess around.
So do as you please; it’s fine with me.