The distance of the anomaly he spotted and proposed to be a DEW was many hundred if not over a thousand miles.
The upcoming megawatt lasers will be lucky to make it to around 75-100 miles and thats not for a few years the current ones have a range of about 20-50 miles
Even if there was a black budget super laser no one knows about I doubt it would be going much further than 150-200 miles never mind the hundreds of miles that the anomaly was.
https://www.militaryaerospace.com/sensors/article/16722085/military-eyes-prototype-megawattclass-laser-weapon-for-ballistic-missile-defense-in-next-seven-years