"What you call climate change, is what most people call living."
Tradition does not beget complacency, nor does it preclude reflection. I'm also eating bacon and eggs for breakfast, just the vegan versions, which are really good these days.
The test subjects were treated to avoid as much suffering as possible, in fact they suffered less than animals for food production.
So even on a individual by individual comparison level ( neglecting the scale of slaughter for food) this research is less bad than eating meat.
The 'tragedy of animal testing' isn't -- at least as relates to food stock animals.