No it doesn't imply any of that. If any of that were implied, we'd talk lenghty custodial sentences, not an interview with UKBF, an entry ban, and maybe a fine.
Importation is bringing stuff into a country from abroad, and if that country says that's illegal, then it is. Your gummies are legal (now) in California, they're not in the UK and it's illegal to bring them.

BTW on the way back to the US, try same with a punnet of fresh English strawberries. Fresh strawberries, unlike TBC gummies, are perfectly legal to buy, sell, consume, and advertise, in the UK and in any US state, but if you try to import them into the US in your luggage, you're asking for trouble.