Bioreactors aren't magic, there still needs to be a growth medium. The question is what media are involved.

He talked about production benefits, how's that relevant? Very unconvincing arguments so far.

I'm not trying to 'convince' you of anything. I'm pointing out that bioreactors still need growth media, and it can still be egg-based.

You are not even the guy I was talking with, eggs or no eggs, it's not about eggs.