Nonsense... It would only give junk science a new avenue to explore -- It is really all the contrails of high alititude airliners injecting water vapor at a critical altitude, where it accumulates and retains more heat for the earth...
There might be something to that. There's been many days when it would be cloudless except for contrails.
Actually the author indicates the critical altitude is somewhat higher. If anything, the ice crystals injected by the airlines would have a cooling effect, but they also would settle out fairly rapidly.