There are several of these per day, and they force players to play openings we often dislike or don't play. I think it's fine to have themed tournaments on special days (like Frankenstein opening on Halloween) but not several per day, interrupting the real chess tournaments.
Or, alternatively, offer them in a separate series of tourneys: themed bullet, blitz, classical, in a themed series.
Notice how often professional chess tournaments or amateur chess tournaments have a theme? Answer: never. Why does lichess insist on it?
Or, alternatively, offer them in a separate series of tourneys: themed bullet, blitz, classical, in a themed series.
Notice how often professional chess tournaments or amateur chess tournaments have a theme? Answer: never. Why does lichess insist on it?