As pointed out at https://www.yahoo.com/news/us-oil-production-peak-2027-220000955.html , the best current estimates are that we will reach peak oil/gas in the next 7 years, after which obtaining more becomes more expensive. In comparison, peak coal is likely still decades away. Some estimates have indicated we will reach peak coal in the early 2050s. If these estimates are correct, we should expect the cost of oil/gas to rise relative to coal in the coming decades, which should be a factor for consideration in the closure of coal plants like the Campbell. According to best estimates now, gas and coal remain for Michigan remain the reliable and affordable options for baseload electric, compared with the alternatives. Nuclear at this time is much more expensive, and solar and wind lack reliability needed for baseload, even with batteries considered.
Of course, technology changes, and those changes should affect policy direction. But current policy direction should be guided by best estimates now of what is reliable, affordable and environmentally responsible, and not wishful thinking.