Why do we call proposed Acts by the name their creators gave them, instead of choosing a more appropriate (and accurate) name? "Internet freedom Act" - Empow

Why do we call proposed Acts by the name their creators gave them, instead of choosing a more appropriate (and accurate) name? "Internet freedom Act" - Empowering Telecom Companies Act "SOPA" - Criminalize Ordinary Internet Behavior Act "Patriot Act" - Remove Guaranteed Rights In Favor Of Empowering Central Authority Act "Affordable Care Act" - Essentially Romneycare etc. Why should these names not have colloquially adjudicated corrections applied to them the way anything else does?