One has to consider that the Treasure Valley / Boise area is several cities that have all grown together to create one big metropolitan area. I suspect that the 600k median home price is for Boise proper and not the entire Treasure Valley area. The further west from downtown Boise you go the cheaper the houses get. Same with the average wage, is that for Boise proper, the entire area, Nampa?
But yes, with remote working a lot of people moved in to Boise during the pandemic and in the course of about a year and a half doubled home prices.
I've visited a few times over the last couple years and am considering moving there in the future. Having grown up in Minneapolis and lived in Denver the last 23 years Boise and the surrounding area is a pretty quiet city and remarkably clean for a city it's size. There were no homeless camps in the downtown city parks as well as I didn't run in to any panhandlers, the river through town had close to zero garbage in it. I get a chuckle every time someone on here makes some sort of comment about how Boise is trash. Having experienced a lot of major cities across the country Boise in my mind is probably one of the cleanest and safest big cities I've ever seen. It borders on being a "Mayberry" like town.