I don’t think the film industry understands the point of surround sound.
I’ve recorded from hundreds of movies and most of them mix the same audio on all five channels. Several Disney flicks even play the dialogue through the side speakers!!
When the same sound is coming from every direction at the same time there’s no localisation or separation and the point of surround is defeated. Immersion is diminished.
Only dialogue and sounds directly in front should come through the center, and only music and stereo effects should come through the front’s. Only ambiance/reverb/sounds behind you should come through the rear channels. Absolutely zero crosstalk!