The Gunners striker was snubbed by Deschamps for his squad this week.
And Henry told Goal: "Didier knows what he's doing. Didier is the boss of the national team, so I do not know why he [Lacazette] was not called. All I can tell you is what I see.
"He's a scorer, but the competition is huge in France to play up front. [Olivier] Giroud is doing extremely well, [Antoine] Griezmann can also play this position.
"[Alassane] Pléa also stands out with Mönchengladbach. [Wissam] Ben Yedder shines with Monaco and also when he was in Sevilla. This is a subject that I find it very difficult to talk about because you have to respect the coach's decision. I always liked Lacazette as a No9, but the most important thing is that Didier likes him too."