So far Matter just seems to be shuffling the deck chairs and not making much of an actual difference. I thought the entire idea was universal compatibility.
No. Matter means I can use the same lights with my iPhone as my wife with her android phone. I need my iPod mini as MY hub and she needs her Nest as HER hub.
Matter is great. Before Matter if I bought devices that were HomeKit only my wife couldn't use them and I couldn't use devices that were for Android users only. Now both me and her have millions of devices we can use.