"That's pretty well it, really. They just withdrew all the charges. That's all I got from my barrister," he said.
He was "pretty happy about it" and said he struggled to see how police could continue pushing the charges, especially as many other protesters had their charges withdrawn as well.
Baker said he didn't commit any of the crimes he was accused of, saying the charge of resisting police was "bizarre".
"I didn't resist them one little bit."
He was "pleased they've seen sense".
"There was no criminal offending going on. Innocent people shouldn't be charged."
Baker said when he was arrested there were about 30-40 other men in the holding cells who were about the same age as him.
"I think only one of them had ever been in a holding cell before in their lives, so that just proves it was average Joes . . . to arrest that many in that situation, there's something wrong."
A police spokeswoman said there could be multiple reasons why a charge is withdrawn, "such as insufficient evidence as per the Solicitor General's guidelines to continue a prosecution".
According to a previously-published OIA response, 252 people were arrested over the course of the occupation, 234 charged, and as of June 65 people had one or more of their charges dropped.
Baker reportedly represented a raft of groups involved in the protest, working as a liaison between those protesting and Parliament officials.
Groups Baker advocated for included The Freedom Alliance, New Zealand Doctors Speaking Out with Science, Outdoors & Freedom Movement, The Freedoms and Rights Coalition and Voices for Freedom.
A police operation brought the 23-day demonstration to an end in March, after anti-mandate protesters gridlocked central Wellington streets and constructed a tent occupation outside Parliament.
It came to a violent end after police moved in on protesters, and a fire was started on Parliament's lawn.
As well as the ongoing police investigation, the Independent Police Conduct Authority (IPCA) is investigating the policing of the anti-vaccine mandate protests.
In June, more than a third of police involved in the protest response had been referred to wellness advisors or psychologists to help deal with the emotional toll of the experience.
Information released under the Official Information Act showed officers were hospitalised after being hit in the head with bricks, sprayed in the face with substances, and suffering dislocated shoulders and torn tendons.