TheImpressiveXAndy Weir says spoiling Project Hail Mary's big surprise in trailers was highly debated
EmpricornAnd Money won out. Don’t pat yourselves on the back for debating it, the end result is you produced a worse product and experience, that wasn’t consistent with the original vision. For more profits…
The trailer made me read the book. I think the spoiler is fine cause no one would want to watch another cliche space interstellar movie.