3 tier tarrif

What is the point in offering a 3 tier tarrif which is only available to smart meter users?
How many of us are STILL waiting for you to begin installation
May think of looking at octopus energy who offer same type of tarrif with a smart meter instillation

Octopus as far as I aware are only offering Smets1 which may not be usable with other suppliers.
I believe Bulb have started installation of the Smets2 but the meters are in high demand and in short supply.