Hi! I want to disable the latest new geodes for my modpack but the geodes.properties is not generating in my config folder. I also tried to make a datapack to disable them but is not working at all.

You can take a look here:
data.zip

The config file does not generate, you have to create it.

The reason your datapack is not working is that the replace field of your tags is set to false. Set it to true and it should work.