It should be obvious, but "misinformation" is an arbitrary political designation and therefore a constantly moving target. "You should wear an N95 mask to avoid getting COVID" was misinformation in March 2020 but not 3 months later. "Vaccines may not prevent COVID transmission" was misinformation from 2020 until sometime in 2022. "COVID infection may confer significant immunity from future infection" was misinformation for about the same period. The "lab leak hypothesis" was a "racist conspiracy theory" from 2020 until 2023, when it was officially endorsed by YouTube's political sponsors. And so on.