Pine Trees: Is there a disease attacking them?
These look like Colorado Blue spruce, looking like many of the Colorado Blue spruce in Michigan. Because these trees are not adapted to our humid conditions, many develop fungal infections which cause these needlecast symptoms. Some of the infections respond to fungicide treatments, others do not, but even those that do require several treatments per year for several years to begin to control it. I am attaching an article that discusses what is going on with our spruce trees and includes a link to another article which discusses better choices of evergreen trees for Michigan's climate. https://www.canr.msu.edu/news/what_is_spruce_decline_and_what_should_you_do_about_it
If you decide you would like to pursue treatment, it is recommended that you contact an ISA-certified arborist. One can be found on the treesaregood.org website that ISA maintains.