The Negatives of No Freedom

Yield yields are pegged, so that's good for asset valuations based on credit spreads and discount rates. But in terms of practical applications, what are the negatives? No freedom is kind of, it's hard to quantify, no freedom. People who own treasury bonds or part of the yield curve get a certain coupon. Their yield could be very low, it could be extremely low, could be negative if you take into account inflation. They're owning it based on their own volition, right?