It's not a belief. Animals being sentient is a fact. Animal agriculture being inefficient and wasteful is a fact. Animal products not being necessary for our survival is a fact.
Now you could argue that killing sentient beings is OK, but then that's a weird moral position. And nevertheless, not a belief
With 16gb of RAM and 102% CPU, the computer shows you a UI on any underlying hardware, any monitor/tv/whatever, handles a moise, keyboard, sound, handles any hardware interruption, probably fetches and sends stuff to the internet, scans your disk to index files so you can search almost instantly through gigabytes of storage whether it's USB sticks, ssds, harddrive, nvme drive. And probably a lot of other stuff I'm forgetting. Meanwhile the other thingy with 4kb ram did college math problems. Impressive for the time yes, but that's it.
Yes, nowadays there is a lot of inefficiency, but that comparison does not, and never did, make sense.
Sure, then you can start libreoffice calc and go up to around 1g of ram and close to 0% CPU anyway.
My point wasn't on exact numbers because obviously the ones in the image are made up, unless that excel file is a monster of macros, VBA scripts and connections to numerous data lakes.