In the long distant past I was giving a whole lot of Kudos to just one person (they were, I think, in battle with Aquine and I was offering encouragement from the sidelines!) and then, after about four or five on one day I was told to stop and spread them around.
I can see your point. If you consider any post worthy of a kudos (which can be for all sorts of reasons) then there need be no restriction.
If two or more people are engaged in a fierce debate then it shouldn't be interfered with by a dictatorial rule. And yes, your last sentenced sums it up nicely. You can now give me a kudo ... if it's allowed!