Sooner or later this is going away. If you announce you're not doing new installations, that starts a timer on the existing users. In 2028 everything in use is at least 5 years old. In summer 2035 everything in use is at least 12 years old. Politically that makes it a lot easier to sell an actual prohibition on supply than it will be for places where that's a sudden overnight change from "Sure, you can use gas" to "No, we're ripping that out".
My country has begun gradually getting rid of POTS copper wire telephone provision. You can still have it, for a little while at least, but we know it has limited lifespan, if you're an outfit who somehow didn't spot the signs and were shipping devices that expect a physical copper line to work, you've had your notice, in a couple of years stuff like that will drop dead. When it's gone, with it goes a bunch of expenses that most people don't benefit from at all. And yes, also some relatively modest benefits are gone too, but mostly it's a burden, we have better things to spend resources on. But you need to give people a heads up first, and that's what this legislation seems to do.