If we're honest, this is exactly what it will take for the bots to evaporate into the void. I have always been against 'having a license to internet', but I am very interested in seeing what will happen to all the bots if it does (temporarily) succeed. No bot should be able to pass an ID check, and if one does, its pure legal fuel to sue the system.
That's beyond naive. Nothing will happen to bots because they're not human (and/or) individuals from first world nations. Bot farm runners can either print IDs, post from unrestricted locations, or through bulk posting APIs offered behind doors. Social media operators has less issues with cooperative spams than actually organically trending posts because contents are less original.
IANAL, if there is a very clear legal requirement to identify every user in the system to determine their age, and the bots remain unfazed, then the ID verification mechanism is clearly broken. If the ID mechanism is clearly broken (wontfix situation), then the social media entity has willingly ignored their legal obligation to ID children. Someone will very likely sue the social media company for that.
