I mean... The comment is suggesting a false dichotomy (possibly without meaning it) that options are either seafood or land animal production. I'm not vegan, not even vegeterian, but the only answer I can give in good faith is that "I have to eat" is not a good argument, there's alternatives better for the environment than seafood _or_ land animal production.

No vegan even commented, I find vegan-bashing so much worse than vegan-evangelism. I'm seriously getting vegan fatigue fatigue.