Azeem Rafiq urged cricket to "understand the extent of its problems and address them" after a hearing into allegations of racism and discrimination at Yorkshire saw a number of charges upheld.
Former Yorkshire batter Michael Vaughan, who had a distinguished career as an Ashes-winning England captain, appeared at the hearing and was cleared of the accusations against him.
However, Gary Ballance and the club itself admitted charges they faced prior to a hearing at the start of March, and a number of fellow former Yorkshire players had cases against them proved.
The charges brought by the England and Wales Cricket board (ECB) were heard by its cricket discipline commission (CDC) at the start of March, and not all aspects were proved.
However, each of Matthew Hoggard, Tim Bresnan, John Blain, Richard Pyrah and Andrew Gale had at least one charge upheld against them. They chose not to appear at the disciplinary panel hearing.
Former spin bowler Rafiq blew the whistle on racism at Yorkshire in 2020 and welcomed Friday's outcome announcement.
Rafiq said: "Charges against seven of the eight defendants, including the widespread use of the 'P' word, have been upheld by the CDC today.
"This comes in addition to the other reports, panels and inquiries that found I and others suffered racial harassment and bullying while at Yorkshire.
"The issue has never been about individuals but the game as a whole. Cricket needs to understand the extent of its problems and address them.
"Hopefully, the structures of the game can now be rebuilt and institutionalised racism ended for good. It's time to reflect, learn and implement change."
Vaughan described the proceedings as "an inappropriate, inadequate and backwards step".
He added: "One of many reasons why I hold that view is because CDC proceedings are adversarial. They invite claim and counterclaim. They invite those involved to accuse each other of untruths or of lying."
Vaughan said there were "no winners" from the process – "and there are better ways – there have to be better ways – for cricket to move forward positively and effectively".
He said the case against him had "at times... brought me to the brink of falling out of love with cricket".
"I won't address here the toll that it has taken on me and my family," Vaughan added, "but I have no doubt that it has also been incredibly stressful for all of the others concerned. I hope that for them and for cricket, an inclusive healing process can now begin."