the recipes Modified are changed to encourage you to automate vanilla things like tree farms, mining, and Mob Spawners. As you slowly get access to more mods you will be able to make certain processes more efficient.
the main way the recipes are changed is by using singularities for various modded items to make it difficult to attain until those tasks are automated
Note: the Carbon Singularity also uses charcoal blocks added by other mods making it easier to get by way of tree farm (instead of mining)

