From the ISC web site

Posted May 30, 2025 9:43 UTC (Fri) by jengelh (subscriber, #33263)
In reply to: From the ISC web site by rschroev
Parent article: Local vulnerabilities in Kea DHCP

>Did people migrate to other solutions?

I migrated to IPv6/SLAAC :-p
NetworkManager has its own client. And some people might have gone with udhcp or systemd-networkd.