Are you talking about high-APY staking? (I don't know the ins and outs of CUB and searching for posts here didn't really help)
If so, doesn't that simply incentivize people to endlessly stake and never use the coin?

If I understand your point correctly, it's that the inflation is not "out of control" but that everyone earns more in turn (so if inflation went up 100% I also got twice the coins I had), but I don't understand how that's better than a more stable rate.

It sounds like a sort of rollercoaster where for one, prices are unstable (purely psychologically this is a PITA - always having to re-calculate profit/loss based on more factors) but the "market cap" if you will stays the same. What benefit is there to intentional hyper-inflation?