I always feel like a git telling people "it's nftables now!", but it's been over a decade and folks keep using iptables as the common identifier. It's slow to change language. You're right, many of those iptables commands are utilities/scripts around nftables now.
I work in IT and it is now probably 25 years that I keep hearing that IPv6 is round the corner. "Adoption" is ~35% but what this means that in 35% of the cases, you can get to a place though IPv6. This does not mean that you must, or do. It is just the capacity.
When a technology takes 25 or so years to be mainstream it means that there is a problem somewhere ("too complicated", ...) or that there is no problem in the forst place ("iptables work fine for me", "I NAT my 10.x network", ...)
