There isn’t much difference between adult and child toothpaste nowadays. There used to be less fluoride in children’s toothpaste but a few years ago they brought it up to the same level.
If they removed VAT on kids toothpaste but not on adults then I’d just start buying kids toothpaste.
Absolutely not true. Different fluoride levels are recommended depending on the child's age, which is why you get 0-2 years, 3-5 years etc. Source: am dentist.