I would expect “Anything goes. A normal meat-eating diet, optimized only for health and convenience.” to be a reducetarian diet in practice compared to the average diet for most people in most developed countries, since I think the average person eats more animal products and too few plants than is optimal. I would guess that for most people, a roughly optimal diet for health and convenience could be found within the group “vegan except for dairy, bivalves and when it would be inconvenient”, which also falls under Approximate veg*nismin places where most restaurants have decent veg options with protein or if you rarely eat food from restaurants, although there are other considerations. The main exceptions would be when getting food from a restaurant with no good veg options (or when in a group looking to order from such a restaurant, and you would otherwise try to persuade them to get food elsewhere).
When considering only the more direct effects on farmed animals and wild animals, the only animal products I would recommend replacing with plant-based foods would be from herbivorous* factory farmed animals roughly the size of turkeys or smaller, other than bivalves and similarly unlikely to be conscious animals, so
Factory farmed poultry (chickens, turkeys, ducks) and their eggs
Herbivorous farmed fish
Herbivorous farmed invertebrates, other than bivalves and others with similar or lower expected moral weight
Herbivorous farmed amphibians and reptiles, although relatively few people eat them often, anyway
This assumes their lives are bad on average, which is my expectation.
*What I mean by “herbivorous” here is that their diets while farmed are almost exclusively plant-based. Also, I would add if their diets are herbivorous except for animal products from farmed animals, themselves on the above list, and maybe extend this further.
I’m personally bivalvegan, i.e. vegan except for bivalves, and plan to stick with this.
I would expect “Anything goes. A normal meat-eating diet, optimized only for health and convenience.” to be a reducetarian diet in practice compared to the average diet for most people in most developed countries, since I think the average person eats more animal products and too few plants than is optimal. I would guess that for most people, a roughly optimal diet for health and convenience could be found within the group “vegan except for dairy, bivalves and when it would be inconvenient”, which also falls under Approximate veg*nism in places where most restaurants have decent veg options with protein or if you rarely eat food from restaurants, although there are other considerations. The main exceptions would be when getting food from a restaurant with no good veg options (or when in a group looking to order from such a restaurant, and you would otherwise try to persuade them to get food elsewhere).
When considering only the more direct effects on farmed animals and wild animals, the only animal products I would recommend replacing with plant-based foods would be from herbivorous* factory farmed animals roughly the size of turkeys or smaller, other than bivalves and similarly unlikely to be conscious animals, so
Factory farmed poultry (chickens, turkeys, ducks) and their eggs
Herbivorous farmed fish
Herbivorous farmed invertebrates, other than bivalves and others with similar or lower expected moral weight
Herbivorous farmed amphibians and reptiles, although relatively few people eat them often, anyway
This assumes their lives are bad on average, which is my expectation.
*What I mean by “herbivorous” here is that their diets while farmed are almost exclusively plant-based. Also, I would add if their diets are herbivorous except for animal products from farmed animals, themselves on the above list, and maybe extend this further.
I’m personally bivalvegan, i.e. vegan except for bivalves, and plan to stick with this.