Inhibitions harm the potential of your pitch. When you’re inhibited you are reluctant to speak in a bigger voice, or be theatrical. You’re monotone. You don’t tell stories. You’re less animated.
Why does that happen? I don’t know but in studies they’ve found that people present more effectively when everyone is wearing a mask. People have less inhibitions with anonymity.
It’s difficult to simply ask people to turn their inhibitions off. But, you can be more sensitive to your own inhibitions and how they are impacting your presentation.