If a governance proposal earns >50% approval, end voting early?

Looking at the IBC proposal, we’re at 54% voted, with 100% saying yes, but the poll will remain open until the 20th. In this situation would it make sense for the protocol to see that we’ve hit a point of no return and cut the vote short?

Would there be issues around not being able to know when the vote would end?

@Steve - unless it is a critical bug, what are the advantages of ending a vote early?