I think they are more pissed off when there is no way for them to see what's actually going on. Some understanding is much better than 'wait, why doesn't my kick reach?', especially when you add the opponents wonky hit box into the mix as well.
I remember with ssf2:T there was a Japanese guide book called 'yoga book hyper', with hit box pictures on pretty much all attack sprites for all characters, that was a real eye opener. And later on you could get a hit box plugin for Emulated ST.
If they really want this to be beginner friendly, letting the user see behind the curtain will let them figure out how the game is meant to be played much faster. It seems they are adding quite a bit to training mode with different recording actions etc. hit boxes and frame data should be the next step.
And I guess vita SFxT shows it's a possibility at least.