The links probably aren't directly trying to get anyone here to buy gummies. They're simply trying to get the websites that are selling them pushed higher up Google's rankings (because Google will see that the web is full of links to those sites and therefore assume that they're popular). That's why it doesn't matter to the spammers that their posts are in Russian or that they're linking to Australian or Dutch websites. As long as the links are appearing on the web, they'll get paid for putting them there.
I suspect that the actual businesses selling the gummies are a mix of total con merchants (who'll take your money and not send you anything) and those who'll send you some gummies that have got a CBD content so low as to be totally ineffectual.
I couldn't get anyone here to admit to accepting a spam offer when I asked a similar question here over 17 years ago!
https://www.theanswerbank.co.uk/Shopping/Question148144.html