That’s what a firewall and a DNS service is for respectively, imho. As long as you get an IPv6 prefix from your ISP, you can expose as many devices or services to the public as you want, by just allowing incoming traffic to a listening port. That was sort of the whole point of having a large enough address space when moving away from v4. Maybe it’s just me but reading stuff about “private AI” on a website where the relation to the product is not immediately obvious, makes me question their legitimacy.

The more I look at their site, the more it reads like a sales pitch for IPv6, which sounds kind of expensive at $6-10 a month.