The overwhelming majority of people, independent of political ideology, support banning social media for children. [1] That's just a random poll - you can find a ton, they all say the same thing, and pretty much everywhere across the world. Seeing a conspiracy or ulterior motive with politicians doing something that the overwhelming majority of people want speaks to the state of modern governance and governments, but is nonetheless unjustified.
[1] - https://yougov.com/en-gb/daily-results/20251202-12c49-2