Exactly. Any time there’s subjectivity, it’s ripe for abuse.

The law should punish:

• creating images of actual underage people
• creating images of actual non-consenting people of legal age
• knowingly distributing one of the above

Each of those has a clearly identifiable victim. Creating a new work of a fictitious person doesn’t have any clearly identifiable victim.

Don’t make laws to make prosecution easier, make laws to protect actual people from becoming victims or at least punish those who victimize others.