Animation quality has always been a question of budget and motivation: the shortcuts (still or partially still images, reuse of cels and whole sequences, lower

Animation quality has always been a question of budget and motivation: the shortcuts (still or partially still images, reuse of cels and whole sequences, lower frame rate and systematically repeated frames, less effort at designing intermediate poses and timing them well, badly drawn interpolations between key frames...) are always the same and always available, with modest impact from technological advances (e.g. badly drawn interpolation done by a neural network or by an IK simulation instead of an inexpensive, overworked and unskilled artist). Crap quality is typical of cheap TV productions, e.g. Hanna-Barbera and some anime in the seventies and eighties.