Teaching kids to recognize when mom and I parent differently - good idea or bad idea?

My ex is way more strict than I am. Like, she has a 7pm bedtime on school nights and I do 8pm. She doesn't let them have screens on weekdays and I let them wind down with 30 min of youtube. My kids have started asking me why I'm "more fun" and my ex is "mean." I want to validate that different houses can have different rules without making it sound like one parent is wrong? Or should I just not address it and let them figure it out?