Could be cool to have a config option to change the tag of the Steam Turbine Input. So instead of "forge:steam" you can change to what you want.

        FluidTags.getAllTags.getTag(new ResourceLocation("forge:steam")),

Could be useful for the pack i'm making, thanks!

It's a steam turbine, I don't think it needs to be able to accept something else, that would just be confusing.
You could always use the other turbine and register whatever you want to add as a fuel for it.