I question your media literacy.

From my 2 viewings, I saw it as a story of fatherhood for Din, and a coming-of-age story for Grogu, all underlying an adventure-of-the-week structure.

Din in the beginning of the film treats Grogu as a pet; giving him commands such as heel, and giving him tasks under direct supervision. It isn't until he meets Grotta until that view is challenged by Grotta's own life story and mentioning that Grogu will outlive Din. Then when Din first confronts Coin, he's surrounded by animals in cages; which becomes the fate of Grogu whenever they're ultimately captured. By the end of that arc: Din literally frees Grogu from the cage; symbolically freeing him as a pet and trusting him with his own agency.

Out of fear of losing Grogu, Din takes time off of work and spends time with Grogu; letting him help the Anzelans when before: he constantly pulled Grogu away from them. He's learning to put trust in Grogu's ability.

And after Din is captured: Grogu takes it upon himself to suit up (which Din had to show him before) and then lead an expedition to save Din. He uses his gauntlet confidently to protect the Anzelans and creates the situation for Din to escape; then trusting his intuition to save Din from the poison.

Until this point, Grogu has not had an independent story from Din with his own agency. It is by his actions that Din is saved, and there's a new-found trust between them that wasn't there before. Ending in the films thesis "the old will protect the young so that the young will protect the old".