Then after you shake your keg and keep it at a super high psi for days, you can start a thread on why your beer is all foam.
The set and forget method is the most accurate for proper carbonation, but it requires time. The funny thing is , people will spend hundreds of dollars on brewing equipment, spend hours brewing, and weeks fermenting, meticulously clean and sanitize everything in preparation of tasting their homemade masterpiece.
Then skimp on the last step, just to get a mouthful (usually green) a couple of days early. I'm not saying it won't carbonate it faster, i'm saying I despise the practice. I will never shake a homebrew, a baby maybe, but never my beer.