What does not seem to be clearly understood here is that the legal offence has nothing to do with the TPD/TRPR at all, it's not specific to vaping.
Legally it's all covered in the UK Food Imitations Safety Regulations 1989 and the EU Regulation 1272/2008 on Classification, Labelling and Packaging of Substances and Mixtures.
It's a potentially hazardous product being marketed and sold as an imitation food/drink product ... it can be misleading to a consumer or child due to its "form, odour, colour, appearance, packaging, labelling, volume".
It's not simply that we might consider it a disgrace, or bad news for vaping, or fuel for the antz ... it's not a matter of personal opinion whether parents are responsible for what their child can get their hands on - it's against the law to produce and sell such things!