It went from “lol Belos is genuinely scared of a literal child?” to “Oh holy SH*T what the HECK just happened?!” real fast. And TBH it feels all the more scary because the Collector is a child. If they were an adult you could theoretically reason with them but to the Collector it’s all just fun and games with no real understanding of what consequences their actions may have for everyone else, combined with limitless power. It feels like the difference between entrusting an responsible adult with nuclear codes VS. giving them to a toddler who may or may not be tempted to push the shiny red button without thinking twice.