Set AITA: walked off set after they added an unscripted intimate scene

Day 3 of a 5-day indie shoot. The director pulled me aside and said they wanted to add a scene that wasn't in the original script — a bedroom scene with simulated intimacy. No intimacy coordinator on set. When I asked about one, the director said "we don't have the budget for that" and that I should "just trust the process." I said I wasn't comfortable doing the scene without one and offered alternatives (implied intimacy, different blocking). The director got frustrated and said I was being "difficult." I finished my scenes for the day, told the producer I wouldn't return without an intimacy coordinator, and left. They replaced me. Was I wrong?