Love, Simon is rated PG-13 in America, and it would appear that many people stateside have issues with Singapore’s restriction on the film.
A change to an NC16 rating in Singapore would allow those in their formative years to see the film and its message.
At that impressionable time in a person’s life where they are discovering who they are, a film such as Love, Simon might provide comfort and affirmation that they desperately need.
There is even a Change.org petition to have the film reclassified to NC16, or no children under 16 admitted.