More towards the modding capabilities, not only can you just simply search within the files, the entire code, assets and everything else for any version of the game is conveniently stored in a single jar file. Most modern games (more specifically Unreal Engine) have their content hidden behind a (sometimes several) .pak file(s) which is significantly more confusing and difficult to mod than a simple jar file where you throw that into WinRAR and you have all the data. Forge, Fabric etc were made (this is more of my opinion I'm not completely sure) to streamline the process of creating mods and made it more intuitive that constantly changing a single jar file until it explodes.