That he was underestimating the Sand People?

Doesnt it becomes clear pretty soon that he was underestimating the Sand People in general?

Like, legit asking, it’s been at least a decade since I watched it.

But the way I remembered it was Obi overestimating stormtroopers because he lead an elite squad of clone troopers, and underestimating the primitive natives, because in any fight with him and troopers against them, they wouldn’t stand a chance.

Also highlighting how much has changed since he was involved in such things.

Like, just because a character thinks something, doesn’t make it true. Obi is an unreliable narrator, but viewers are in Luke’s perspective thinking Obi has all that answers.

Just from a story telling perspective it makes sense. And is far from the only example.