This movie has to get a pass for any plot holes

I always catch the plot holes. But because these happen in dreams, plot holes are acceptable

When Dorothy makes the Scarecrow slip off his pole, his stuffing falls out. "I just keep picking it up and putting it back in again". But if he was always on the pole, it would not fall out. And even if it did, he could not, "pick it up and put it back in again"

When she awakes from the dream as the house comes crashing down, Dorothy picks up her dog and looks around the house. She looks right out the window. She should have known she wasn't in Kansas before opening the front door

"the movie treats oz as though it’s a real place"

I don't really give a shit about Oz or even the Alice in Wonderland stories, but I do consider the Spirit World in Hayao Miyazaki's Spirited Away to be real: I mean, the main character (Chihiro) got a magical hairband from there, and it was still there with her in the Human World, so...!

Well not really holes, but the witch had many more chances to catch them on the way to the Emerald City.

At the end, the scarecrow said something like "I should have felt it for you" and the tin wood man said something like "I should have felt it in my heart", but they didn't get those until they saw the Wizard. Or at least, they didn't know they really already had them.

Anyway, Newhart was a dream and had all sorts of holes.

I didn't catch any plot holes during the non dream parts

I don't buy that