While many reality competitions, like American Idol or The Voice, air at least some of their episodes live each season, The Masked Singer is pre-taped (likely to help keep the identity of its celebrity contestants a secret) for the entire season.
In previous seasons, home viewers of The Masked Singer were totally left out of the actual competition, aside from being able to live-tweet opinions and guesses to clues as the shows aired.
So, there’s really been no way to have the home audience vote en masse and help determine who would come back for the next episode.