Yes, we allow anonymous use. We don't allow fake accounts, and that's a big distinction we want to make.
One thing is a priority account, which, by the way, happens a lot. It adds levity to the platform, and it was one of the first types of accounts that we ever saw being set in the platform. Something else is to impersonate somebody with an abusive intention in mind. We do draw the line there.
If I start tweeting right now, impersonating you, using your photo in the first person, mocking you, that would be a violation of our rules that we would take action on. We also enable bystanders to report on behalf of the person who is getting impersonated. We cannot just equate real name platforms with safer platforms.