Why would 6GHz make such a difference compared to 5GHz?
I don't think the 2.4GHz band even has 160MHz free, for example. Literally impossible to support because 2.4GHz to 2.5GHz is all you get (100MHz or so).
5GHz isn't much larger than 160MHz. Like it can fit but some number of channels is better for everyone.
6GHz band is like 5.9GHz to 7GHz or something stupidly wide. Because of the new wider band, you can effectively have larger channels with fewer problems.
These bands have names. The 2.4 to 2.5 GHz band (100MHz bandwidth) is named the 2.4 GHz band.
The 5.4 to 5.7 GHz band is called the 5GHz band.
The 5.9 to 7GHz band is called the 6GHz band.
Anyone discussing the bands should know the relative bandwidths of each. And the size of the channels also matters but we all know the 6GHz band has larger channel widths, it's part of the point of upgrading
Only problem is firmware support etc is somewhere between non existent and very poor in general for MLO, which is a shame as it's definitely a great feature in theory.