In a nutshell:
Anti-Design defies traditional graphic design norms, discarding established conventions. Its aesthetic is characterised by a loose and unrestricted style, prioritising creativity and impact over structure. Although visually chaotic and busy at first glance, well-executed designs within this space possess a subtle underlying coherence. The apparent chaos maintains a delicate balance and hierarchy, effectively conveying a distinct feeling or message. This movement likely emerged as a response to the prevalent clean-cut and pastel approaches found in many contemporary graphic design practices.
Pietrzyk, Kay Kwon and David Rudnick are some of the artists utilising the technique.
Also see Digital Brutalism