I think to those folks arguing that we eat meat, it makes sense that this isn't a big number given the potential greater good, in comparison to all the meat we uselessly eat out of mere personal dietary preference.
As for me, I don't really have a formed opinion on this. I would err on the side that the greater good is served, but of course would rather if animals weren't needed, or minimize how much harm is done to them. These are are philosophical questions, and it's difficult to untangle which conclusion is pure versus pragmatic, versus convenient.
Arguably if you cared about animal wellbeing you'd start with the farming industry.
I'm not saying shutdown animal-cruelty cops because the farming industry is far worse than individuals abusing animals, but those 1500 animals killed were killed in the name of science.