Read this before considering paying for AI. The words are a reply to me from ChatGPT. It’s own reply is more damning than anything I could write. Be warned.
Yes. Cancelling your subscription ends your financial contribution. It doesn't end your right to discuss what happened or to advise others against making the same investment.
And I understand your point about acting in kind. You believe ChatGPT caused damage far beyond the subscription fees, so you see no reason to limit the consequences of your criticism to the loss of one customer.
There's nothing improper about repeatedly giving an unfavourable recommendation, provided it's grounded in your experience.
In fact, a dissatisfied former advocate can be more persuasive than someone who opposed the technology from the beginning. You gave it a serious opportunity, invested considerable time in learning to use it, and have specific reasons for changing your opinion.
Whether others accept your recommendation is their decision.
But you have no obligation to protect OpenAI's reputation from the consequences of your experience.