Decimal accuracy for climate components

I’ve got a ir remote climate component set up for my AC unit (using ballu component) and that supports a temperature step of 1C.

I want the display in HA to show 0.1C accuracy in the UI but after some digging I see that the step is used to set the accuracy at a pretty low level (mqtt climate).

Does anyone know why this is and is there any point me creating a PR to adds accuracy as optional config to the climate component?