Analogously, millions of people in the US have guns and don't commit (or want to commit) school shootings either. Even so, gun control proposals are a popular response.

It's obviously true that media coverage of school shootings isn't sufficient to make people commit them, but that doesn't mean that it isn't a factor in people's decisions. (From https://en.wikipedia.org/wiki/Mass_shooting_contagion)

> ... A study conducted in 2015 suggest that the Columbine shooters inspired a minimum of 21 mimicked shooting and 53 attempted plans to commit such an act in the U.S. over a 15-year period. ... (https://journals.sagepub.com/doi/10.1177/0002764218763476 )