I saw that movie and it actually killed a lot of the love I had for the series, mainly from reading the books as a kid but still. It wasn't because the movie was a cash grab or whatever, but because it made me realize Rowling is not a very smart person or even all that good of a writer. That sounds horrible now that I look at it but I'm not trying to say that you need to be intelligent to be a good storyteller or creative, so let me explain. I never idolized Rowling or even assumed she was particularly smart, but her superficial understanding of the underlying mechanics of how and why things work, including fictitious things she herself invented, has gone from creating the occasional plot hole or funny little inconsistency to being completely world breaking. She has no sense of the practicality or potential applications of the various fantastical elements she introduces, and so by extension neither do any of her characters. The problem was always there, it's just that this particular movie finally broke the shaky foundation. It also probably didn't help that while I am realizing all this I am hit with the masturbatory "I'm not smart enough to make all of this up" line. That's a real quick way to make something cross the line from "none of this makes sense but it's still a fun ride" to "this is stupid and you're stupid and everyone who likes it is stupid." Though I was able to come up with a sort of head canon/fan theory thing that saves it a little by explaining why the wizards have no apparent capacity for innovation/invention.
tl;dr Muggles were able to take the mechanic of an on/off switch and turn it into a computer. Wizards are able to fit an entire zoo weightlessly inside an easily transportable briefcase and teleport around the world and have million other crazy abilities, but can't think of any way these abilities might be useful so they live in hiding and fear of the muggles.