I already explained that
Imagine the following scenario: during D2 the a n-shot cop (or any investigative role) claims and tells town their N1 result, while also claiming to be a one-shot.
If its number of shots is unknown it causes a WIFOM for scum. If scum believes that it really is one shot, then they won’t see it as a theat, and it survives for another night to use their next shot; if scum doesn’t believe them and it’s true, they’s prolly waste scum’s kill or roleblock shot.
Since we’re claiming who we boosted, and by consequence assuming our number of shots, this kind of strategy, that really helps town to coordinate stuff and clear people, becomes unviable.