Yes it’s true that not all mixes use Front Wides. I actually believe most of my movies don’t. John Wick 3 and The Matrix trilogy do. Mulan does a little with sound effects. It helps widen the sound stage for sure, and you can tell when they’re on.It is true that not all Atmos use them, but many (most?) of the new stuff released seems to. Plus any 5.1/7.1 movie content can use Neural X to upmix and is very good (If you have 11 channels or less without DTS X Pro or over 11 channels with DTS X Pro).