The vast, vast majority of people do not know what NAT is: ask your mom, aunt, uncle, grandma, cousin(s), etc. They simply have a 'magic box' (often from the ISP) that "connects to Internet". People connect to it (now mostly via Wifi) and they are "on the Internet".
They do not know about IPv4 or IPv6 (or ARP, or DHCP, or SLAAC).
As long as the magic box is statefully inspecting traffic, which is done for IPv4-NAT, and for IPv6 firewalls, it makes no practical difference which address family you are using from a security perspective.
The rending of garments over having a globally routable IPv6 address (but not globally reachable, because of SPI) on your home is just silliness.
If you think NAT addresses are safe because… of any reason whatsoever really… simply shows a lack of network understanding. You might as well be talking to a Flat Earther about orbital mechanics.