If a modder makes a modpack thats rubbish, the worst thing thats going to happen is that the modpack is not gonna get used. If mojang makes an even slightly unblanaced aspect of the game, they will face months of backlash by hundreds of thousands of players. Modpacks are often targeted at a certain few people that like to play the game a certain way. With official updates everyone is forced to use them. The two jobs arent really comparable. Quicker updates would mean worse updates, and I'd much rather they take they're time and deliver something decent. That being said, no idea what they were thinking with the latest report system.