Enjolras is kind of keeping an eye on Bahorel to make sure he doesn't need to summon Combeferre or Joly or something. But in the meantime --

In the meantime, there are several things to potentially address in that statement, and some of them are more productive to discuss than others. Harry isn't to blame for his entire society, or for predating thinkers who were born long after his century. (But all the same.)

"Then they have knowledge of the land, and clear cause to fight for it," is what he opts to say.