What we have found with Smart Play only is that if you choose not to use block non-educational videos, a large number of inappropriate videos are visible. This has been logged with an agent who shared my concern. A number of tests were done, when using smart play only we could view videos such as "Twerking" videos which subsequently were allowed. Women wearing next to nothing twerking. This was also noted that smart play appears to bypass Youtubes built in age restrictions for videos. This video on a personal device asked to be logged in from google but not on the smart play device.

Given that the blurb states "Smart Play is an education-focused, machine-learning categorization of videos that allows educational videos and always blocks mature videos. Supported for YouTube."

We were disappointed to see this. We compared smart play to youtubes restricted mode which we found to be much better at filtering out these inappropriate videos but then we were unable to add custom videos to a list to allow this.

One suggestion we discussed was unknown YouTube Videos being blocked by default. Ideally there needs to be a bit of a review of this as it does mean that there seems to be too much access within youtube.

NSFW warning on the attachment, has examples of the issue