I agree with my esteemed father-in-law (BarryLS1) on most points here. Before the Mabul, Chazal tell, us it was Asur to use animals for our own use, or to eat them. Since Noach saved the animals, we gained a certain mastery over them, and the right to eat certain ones – along with the Achrayus of treating them Al Pi Halachah. Additionally, acting cruelly toward Hashem’s Beriyos causes one to become crueller, and Derech Eretz Kadma la’Torah. Therefore, in spirit, I agree with the OP that we must not treat animals cruelly.
I do have two issues with the OP, however, and they are related. One is that I do not currently abuse any animals, and therefore why would I agree that “we” have to stop doing so?
The second is that Hashgacha on the Halachic permissibility of consuming animal products and the conditions under which said animals are held – even if, CH”V, contrary to Halacha – are two different things. A Hashgacha mark on an item on the supermarket shelf does not tell me anything about those conditions, nor should it. Anyone can do their own research, ask their own Shailos, and make their own decisions – and they should – but to imply that “we” are abusing animals because we are buying kosher eggs or meat (assuming that it is kosher!) I find disingenuous.