Developer Chris Wetherell - who led the team to create the tool to share posts in 2009 - admitted that it has given the people the "power" to spread any kind of message.
He told BuzzFeed: "We put power in the hands of the people.
"But now, what if you just say it slightly differently: Oh no, we put power into the hands of the people."
The admission comes after Twitter boss Jack Dorsey admitted the micro-blogging platform needs to do more to tackle online abuse.
The company supremo feels more needs to be done in order to combat abuse, conceding that putting the burden on victims to report abuse was not the way forward.
Asked what grade he would give himself for "tech responsibility", Dorsey said: "Myself? C. We've made progress but it has been scattered and not felt enough. And we've put most of the burden on the victims of abuse (that's a huge fail)."
Twitter has come under fire over recent years for its handling of various issues, including fake news and bullying.