

The only way this is a strawman is if your statement is a non sequitur. Otherwise, my reply very much holds.
You can’t counter “raising enough cows to supply our current meat demand takes a lot of resources we could be eating instead” with “its okay for them to eat grass :D” unless the implication is that eating grass is sufficient to meet that demand.
Otherwise, you’re just commenting that cows eat grass. Which congrats, I guess? I think I know some middle school students who might be surprised by the information?
In that case, thanks for informing us that cows can eat grass. We are very proud of you. We absolutely had that knowledge already, but still, thanks for your effort.