It does seem like it would be very easy for the funds to be stolen with 5 keyholders with full keys, it would be very difficult to identify who stole it if it was done carefully.
Any business has petty cash needs though, even a DAO, so I guess it is worth taking the risk. I have voted to support it with my proxy.
All of the keyholders have more to lose than to gain from that and have a higher level of involvement in Hive. Thanks for supporting the account.