Question How is this going to work in practice, if I watch a vid that's tagged 'step relative' am I going off the jail and on the register? Does it have to be

Question How is this going to work in practice, if I watch a vid that's tagged 'step relative' am I going off the jail and on the register? Does it have to be in the description? What if it's just been tagged every which way and does actually appear to portray anything illegal? What if the tags and titles are removed, and I watch exactly the same videos. Am I committing an offense because in someone's head canon the characters are related?