I concur with this theory.  My aunt has a smart meter that controls her usage, she can't turn up the hvac  or do laundry when she wants to.  New houses have smart appliances and water heaters that are vulnerable to hacking.  Gas water heaters and stoves can be vulnerable to a "surge".  Some houses were spared most likely because those didn't have smart meters or appliances.  The theory states that gas was allowed to build up in the neighborhood and then a laser beam transmitted to the gas cloud ignited the explosion that basically did the incinerating leaving trees and grass that were not in the wake of the blast intact.  This matches the videos we've seen and the huge black cloud of incompletely combusted gas billowing for miles that was contained by the manufactured temperature inversion.  Those mfrs!