Do it at night when people are going to bed. Send out a message to get people to check their pagers, then detonate them. There’s still a chance of collateral, but it’d be significantly lower than detonating them when people will be out in public at the cost of what I imagine would be a slightly lower chance of hitting targets.
My understanding is that’s usually how it works. It’s just that most people usually settle for like, transformation art or VRChat and don’t need to make an entire blockbuster movie trilogy to come to terms with being trans lmao