This option exists on Meatculus if you have enough of their pseudocurrency. I agree that this is a bit silly. You might consider doing a feature request over on Metaculus.
Just looked it up again, and this feature is also available if your account is above Level 2. You can find the available features under your profile.
I wish the community predictions were hidden by default, with the option of viewing them with the click of a button. Alternatively, I wish there was a setting option to hide them. This will help me avoid anchoring when I'm practising the art of forecasting.