Just another new age bullshit. From time to time something like this becomes a trend all over the world.
The best thing in my opinion is to eat what you like. So if you don't like meat or fish, just don't eat them but please avoid this phylosophical bullshit.
I'm not vegan but I think calling it bullshit is too much.
People don't turn vegan just because they don't feel like eating meat or fish anymore.
Most of these people struggled to quit eating meat - they've been eating it for most of their lives, and meat is delicious.
But because of consciousness and they're need to align it with their principles, they did it.
It's really all about living with a peaceful mind.