I would assume they've done some research though, and have cold, hard numbers.
And that's just it, if I was a child now and wanted to watch something after returning from school. Would I watch a news bulletin or a cartoon or entertainment show on the CBBC section of iPlayer?
Most of us watched Newsround in the afternoon on BBC One because it was there and it helped that there was Grange Hill, Byker Grove or another great drama series on afterwards, so you wouldn't go across to CITV who by then would have finished and the ITV regions would be showing something else for adults.
Admittedly Newsround awoke my interest in journalism, but there wasn't the internet in homes when I was in the target audience in the 80s and early 90s.
The digital first strategy ensures the BBC continues to provide PSB children's journalism, but as we should all know by now that we live in a multi-platform environment where CBBC's audience are the most likely to embrace watching their output on portable devices.