DNSSEC deployment has been anything but trivial. This APNIC post from 2024 estimated that about 1% of DNS queries were being validated via DNSSEC: https://blog.apnic.net/2024/05/28/calling-time-on-dnssec/. That's more than 25 years after the IETF first standardized DNSSEC.

I track DNSSEC adoption across the Tranco research list of top domains:

https://dnssecmenot.fly.dev/

2107: The year of IPv6, DNSSEC, and The Linux Desktop.