Fan attendance was limited by Covid-related restrictions for the first half of the season, and the Blue Jays played in Buffalo in a minor league ballpark for part of the year. By the time the NFL season started the capacity restrictions had been lifted. The TV ratings are a worrying trend for most leagues other than the NFL.
True, its why I also listed the link for TV viewership also falling. If 2022 doesn't end up losing alot to contract disputes, this years park attendance should come up alot from 2021.