Lots of claims of being able to engage stealth aircraft from cell phone systems to the S-400. The proof is in the pudding. IMHO the stealth claims are nonesence untill proven otherwise.
However, the more signifigant aspect is its long range. It in thory could hold at risk AWACS planes close in or even the new ABL 747 in development which would have to be pretty close to the battlefield. However, I see no reason the ABL could defend its self using the laser against the inbound SAM


Also it's not as simple as you seem to think it is. Using longer waves ( which are capable
of detecting stealth )reduces the accuracy of the radar. BTW, coatings are only a percent of the stealth technology used

