As long as you are right it prevents but if you are wrong then you are accountable for the damage you made to the account.
I doubt very much that there are serious consequences of leaving negative feedback for a few days while things are being clarified to prevent scams.
Nowadays even to participate in signature campaigns, you are not automatically kicked out because you are given a negative feedback from a DT. For example:
Do not have any legitimate negative feedback on your profile from a DT-member.
➥ Don't apply if you have more neg tags than green tags, or if you have an active flag (c)