All it takes is one really bad transaction to nullify a thousand positive transactions. If that bad transaction is not allowed to be mentioned in a feedback thread then the positive transactions will not be very instructive.
When I complete a transaction and the other person asks that I provide them kudos I gladly comply. But adding my "Great transaction! A+++!!!111" to the other dozen in the person's feedback doesn't exactly provide much value without a way to appropriately contextualize it.
If others find utility in the kudos thread, that's great. I, myself, do not.
Incidentally, David Ortiz just dropped a major "F bomb" on live TV. I wonder if NESN will apologize...