Trijicon made a mistake on this one. I too love the company and their optics, but they screwed the pooch on this one and have no one to blame by themselves. If they didn't get explicit okay on these sorts of inscriptions as part of the contract then they are at fault here and should have known better. I find it very difficult to believe that the military signed off on this as part of the procurement given the sensitivities around religious pressure within the military, the logistical problems of maintaining and distributing marked and unmarked equipment on soldier request, and the broader "crusade" accusations that get thrown around.
That said, I hope the response to this from the military isn't over the top. First, the claim that these inscriptions put a "crusade" type spin on the whole war effort is complete BS. If the inscriptions said "Death to Allah" or referenced something of that sort then maybe that complaint would have merit, but that isn't the case here. There are two complaints that have merit I think. First, I think that soldiers that do not wish to have the inscriptions on their equipment should be allowed to swap it in for un-marked versions, at Trijicon's expense. Second, if the military knew of these markings and did nothing to rectify the problem until it made news, there is a valid "promotion of religion" issue to be dealt with through the command structure through normal disciplinary means.
I can understand the intent of the company, as well as the desire by many soldiers to have an optic with this kind of inscription, but supplying these on a government contract was a poor decision by Trijicon and they need to own up and make it right. If the military knew of this and contracted for them anyway, Trijicon is off the hook and the procurement and command structure of the military needs to disciple those responsible.
Lastly, why wouldn't Trijicon offer this as an option on their civilian and direct sale LE models? Seems to me there would be a sizable market for this, or at the very least would work well as an online or retailer special order option.