Nothing.

I disagree, I believe it's interesting to bring some "stability" where people can make financial decisions and project themselves a bit without being like "I'm going to put money on HBD and hope that 3 weeks from now they don't reduce the apr to 0".

The counter argument where you could say "well then you can just remove from savings and move your funds to a different defi protocol" is valid though.

Another good argument against it is that it could "lock" hive in an unsustainable spiral of generating too much inflation, say someone locks up 20m HBD at 20% for a year, that's a lot of inflation, and if the witnesses realize too late that the tokeneconomics will drive HBD to the ground, we can't do anything about it.