Okay? Not every adult has an easy time with computer skills.
https://www.nngroup.com/articles/computer-skill-levels/
Social issues and public policy aren't about what skilled outliers in the population are anecdotally capable of. They're about average skill levels, what kind of information is generally available and understandable to the majority of the population, what's being normalized. Yes, some parents are privileged with the talent, training, free time or other advantages to easily monitor and guide their children's interaction with online pornography. Congratulations on being one of the few to have been blessed with luck to go along with your hard work.
A lot of parents aren't so fortunate.