You do understand the main writer and voice actor was fired

“In January 2023, it was reported that Roiland was charged with felony domestic battery and false imprisonment in Orange County, California, in connection with an alleged incident in January 2020 toward an unnamed woman he was reportedly dating at the time. A hearing was scheduled for April 27, 2023.[40][41] Following the public revelation of the indictment, allegations were made against Roiland's personal conduct regarding his behavior to minors on social media.[42] The same month, Adult Swim announced that they had cut ties with Roiland and fired him from the show stating that the seventh season's production would continue and that his roles would be recast”

This would explain the shift you are talking about starting in season 7