At least he's got the advantage of having seen and spoken to JB to get an overall impression and not a made-up wild guess such as CAL has done . How on earth can you tell what anyone is like unless you've seen/spoken to them. Is her way the done thing to form an opinion ??
Deaf people manage to form impression without hearing.
Blind people manage without seeing.
Not all of our value judgments are visual or audible. We can judge on reportage.
Most of the world has an opinion about an entity they've never seen or heard, only read about.
Half the world believes in a God that (arguably) has less evidence to support him than JB does.