Every single one of them denied impairment during those periods. Often vehemently so, belittling anyone who suggested they might be impaired as having succumbed to propaganda.
Every single one of them remarked that they were sharper, more alert, and had better memory after stopping.
It’s an interesting phenomenon to watch. I think it’s becoming more socially acceptable to acknowledge that marijuana causes impairment even after the obvious effects have subsided, which was a taboo topic in the years when saying anything negative about marijuana would get you attacked as being pro-prohibition or pro-imprisonment of drug users. I even remember one of the big technical forums in the 2010s had a long debate thread where people were claiming that THC made them better drivers and citing YouTube videos and “studies” to back it up. It would be rare to see anyone try to make that claim in today’s environment.