I think the same people who are protesting in the article would object to that. Because bar the FCC releasing more spectrum to Amateur radio (which probably won't happen) it would mean removing spectrum from "open" amateur bands.
Where are the amateur bands so crowded that this is a serious concern?
The lower HF bands when they're open worldwide WRT sunspots etc. Above 14 Mhz its not an issue.
Southern California has a dearth of available repeater pairs because of the massive amount of repeaters in use.
I might be oversimplifying, but isn't this the perfect argument for certain digital voice modes? DMR for example uses TDM to put two voice channels in a 12.5 KHz band.