Of course, this is not only about Ubuntu, Fedora, or Linux Mint, as it would apply to all GNU/Linux distributions, desktop environments, and application hubs lke Flathub or Snap Store, which will have to comply with the upcoming law in the near future in some way, especially since similar laws have already been proposed in other US states, including New York and Colorado.
The verbiage appears intentionally vague in the case of the Colorado law. It extends to literally anything with an OS, and the incentive for compliance is being allowed to spy on minors again.