This is not perfection-trapping. This is 1 die going to something that will majorly improve naval survivability, as well as strategic defenses.
And no, they do not currently have Infernium PD lasers. "While the two point defense lasers are currently crystal beam designs, they are not intended to be such in the final product. Instead, as a naval point defense version of the new Infernium lasers is finalized, that will be installed in its place, with the greater heat efficiency offering a significant improvement in defense quality."