I can see it being a political calculus for the ICC to garner as much support as possible, and not just from their traditional supporters. The stigma that it’s merely a tool, using justice in selective ways to further Western interest, strongly dissuades many 3rd world countries from seeing it as a force of true justice. If the ICC truly seeks to have justice delivered, they cannot rely on just nations like Germany, France, or the UK for support, and they will be strongly crippled if, say, more than half the countries in the world no longer see it as legitimate. So this could be an attempt at sending a message to all nations of what it’s setting out to do, which is good, since even if, like you said, the masks fall off Western nations, there is an entity that can provide other nations with grounds to enact justice for themselves against these forces.
I can see it being a political calculus for the ICC to garner as much support as possible, and not just from their traditional supporters. The stigma that it’s merely a tool, using justice in selective ways to further Western interest, strongly dissuades many 3rd world countries from seeing it as a force of true justice. If the ICC truly seeks to have justice delivered, they cannot rely on just nations like Germany, France, or the UK for support, and they will be strongly crippled if, say, more than half the countries in the world no longer see it as legitimate. So this could be an attempt at sending a message to all nations of what it’s setting out to do, which is good, since even if, like you said, the masks fall off Western nations, there is an entity that can provide other nations with grounds to enact justice for themselves against these forces.