[acdha]

This talking point has been debunked since the 90s. Any device capable of doing NAT can perform the even easier task of filtering packets.

Even if you do decide to toss your router and connect directly to the internet it’s a lot less risky than it was in 1998 when Windows 95 didn’t have a firewall. I doubt IPv6 is going to make many people decide they want dumber gateway devices, however, since the cost differential hasn’t been meaningful for ages.