I can grant that bivalves are ethically ambiguous, but you're right, eggs certainly are not. The commenter you responded to diminishes the harsh reality by saying:

>This attitude of 'summary judgment of all animal agriculture' is unhelpful.

Likely so they don't have to think about the consequences of their consumer choices & continue with the status quo, likely not even going so far as to only consume the things they deem okay to continue consuming; though of course I hope I'm wrong. Hopefully they look into it more & come to right conclusions on matters of ethics & environment.

The following is some insight into the human psychology of eating animals & why there tends to be so much push back against veganism/plant-based eating in general:

• Why people eat animals in today's society

• Cognitive dissonance and social conditioning

• How media controls public perception of veganism