It’s worth making whatever kind of submission you can manage for this. The page even specifically notes: “Due to the short timeframe of this inquiry, the committee would appreciate submissions being limited to 1-2 pages.”

This bill will affect all users of social media in Australia, and may have a particularly negative effect on Fediverse platforms (like Lemmy and Mastodon) which are operated by individuals or small organisations that may not have the resources to implement age verification.