This is just a nonsense excuse from a nonsense manager. He simply has something personal against Laporte. Has nothing to do with his philosophy. If that were the case, all the 18 yearolds that have joined the team in the last 3 years would all still be on the outside looking in.
You simply invite the best players and from practice, pick the best.
It isn't an explanation from Deschamps, it was Julian Laurens' reading of the situation and I don't think he was trying to suggest it was to do with Deschamps' philosophy either. His point was Deschamps tends to stick with players he knows. Obviously new players come in when there is a vacancy but it's hard to dislodge players who are settled in the position and performing well for their country. But yes, I agree he seems to have a bit of problem with Laporte. The French national team seems to always have one or two world class players who are needlessly ostracised.