The 55-year-old television presenter was back alongside co-star Susanna Reid, 49, after they both took an extended summer break.
He took to Twitter to tell his 7.6m followers that the "pathetic" government "boycott" is still continuing.
Piers fumed: "BREAKING: We're back - but the Govt boycott of @GMB is continuing. Tomorrow will be the 126th day since any minister appeared on our show.
"You might think this is pathetic. I couldn't possibly comment."
Fans were divided over his continued rage at government ministers.
One tweeted: "The public do think this is pathetic. No other word for it, especially since they are terrified of two human beings."
While another wrote: "Piers thank you for supporting the police when necessary and telling the truths about COVID."
A third added: "Reading a lot of s****y tweets. Piers' is right, it's downright irresponsible for not one MP to go on a MSM NEWS SHOW to give updates on the current situation. For all they know GMB is all they watch that is 'newsy'."
""Can't wait to have @piersmorgan back on @GMB it's been a long boring summer can't beat waking up to a good rant from the only one with the b***s to actually give the govt a good grilling", wrote another.
Others disagreed with Morgan, as one wrote: "Why would anyone want to be shouted and screamed at by you and her at that time of the morning. Can't blame them."
"It's probably because you don't let them speak. It even annoys me. Susanna try's too hard as well, literally asks a question then decides to ask another one without them being allowed to answer", added another.
A twitter user penned: ""Probably the best decision this government has made throughout the pandemic tbh."
Good Morning Britain airs weekdays at 6am on ITV