These lasers require minerals that are in short supply right now, especially rare earth metals. In spite of the name rare earth metals aren't exactly rare, but they are rather difficult to refine.
That is just nonsense.
They are rare, the lazers, because they are complex systems. You have to track the target. To kill shells you need multiple lasers targeting the same shell. The electronics use simple chips. As long as they can make phones, they have enough rare earths for what ever they want.
The lasers are in general CO2 lasers. They only use rare earth, if available, they do not need it for functionality.
The people in the USDOD are certainly working on getting lasers to the front lines but they have a shortage of materials
Nope. They lost the race when they could not deliver 30 years ago as their MIC was to expensive. Now Germany and Austria is selling them for an Apple and an Egg: the Americans do not even want them: NIH syndrome.
It takes china to make them mainstream and some angry words from an american president to push them into the US Army (the Navy has a few, but does not really want them).