Youtube should have voluntarily removed shorts and the front page or made them available as a parental control to appease the regulator. When I wrote to the minister they used YouTube's addictive algorithms as justification for including them as social media which I do agree with.
We had curated kids logins with age restrictions, subscriptions, and ad free under premium and also youtube music with individual playlists they used for instrument practice etc. We had to shift music platform. I know we can replicate a lot of this with special apps and browser extensions but this was a single cross platform solution that was working for responsible parents. To be fair it is partly YouTube's fault for prioritizing Shorts and watch time over quality.