That's pretty standard for modern anime. More and more work is done by computer and new techniques allow artists to make some incredible animation by retracing it after.

The good part is that animation quality has skyrocketed during the last 5 years, we now regularly get absolute visual bangers shows like Jujutsu Kaisen, Kimetsu no Yaiba or Mushoku Tensei.

The less good part is that it still requires some effort to hide the ugly CGI and sometimes it shows. Looking at you SNK.

The second episode was 80% CG. Im not even joking.