The midfielder came in for heavy criticism for a poor performance on his full debut for Liverpool in a 2-0 defeat to Leicester City in the EFL Cup.
Speaking after that match, former Arsenal star Henry said of his former team-mate: "I have been watching him for a very long time and I still don't know what he's good at".
But Oxlade-Chamberlain, who produced a fine performance in Saturday's 2-0 Premier League win over Newcastle United, feels Henry should have known better.
"Those comments are probably a bit stupid," he said. "When you have watched someone long enough, you know what they can do. I think it was more aimed at the end product side of things and doing those things that lead to scoring a goal or setting up a goal".
"Fair enough, I will take those comments on the chin. It cannot shake me. Saying you don't know what I do, when you have worked with me, I think it is a bit stupid."
March 3, 2018
Oxlade-Chamberlain credits Liverpool boss Jurgen Klopp for helping to reinvigorate him following his reported £35million transfer from Arsenal last August.
"The important thing is that, when I came here, I had a manager who had faith in me," said the England international.
"That is why I made the step. That is the most important thing. Everyone says you have to be your own biggest fan and believe in yourself. I am old enough and wise enough and I have been around it long enough to know that things will be said. There is more in me, I know I have to keep pushing on."
Although Liverpool go into their next match on Tuesday leading 5-0 on aggregrate to Porto in the Champions League, the 24-year-old will be hoping to help the 'Reds' progress to the quarter finals for the first time since 2009.