>It incentivizes landlords to even out their rent increases over time, and to avoid sudden jumps.
No. It doesn't 'incentivize', it mandates.
Also, I have no idea why you're arguing this point, this is rent-control. This is how rent-control works. It sets a cap on what you can charge for rent.
>Especially for lower-income people, price shocks are devastating;
Rent-control is devastating for lower-income people.
Price shocks are a result of spirling supply in face of rising demand. THIS DOES NOT FIX THAT. Rent control does not fix this problem and you can't just wish it away. Rent control makes it worse. In a normal market, prices stabilize. Landlords don't just spike prices over a month because either a) there's a lease agreement which sets these terms out, b) they won't be able to rent the unit out at the higher prices, or c) Good tenants are hard to find and finding tenants takes time and is expensive while your apartment sits there not generating income.