The overbuilding has definitely been odd, so much has been built up, especially around my house it's insane, and a lot of it sits empty or underutilized. I know OP has been putting some incentives on a lot of it, but still, it can't make it be like this. The building boom has been been happening for almost 2 years.
Also, since the pandemic started, purely anecdotal, I think 5 or 6 people in my department have moved houses or jumped into a house, most live on KS, side, but does support the red hot housing market.
Maybe JoCo is just getting the bulk of the rural flight but more are still leaving KS overall.