As it does in many other areas, the controversial nature of the discussion poisons the well on sources supporting either view. The days of ‘here’s a study saying…’ being a useful tactic in anything are kind of dead. Most discussions can have reliable-sounding sources to support contradictory points. It gets hard to find the truth about anything without engaging in in-depth meta-analysis, let alone in a place like a comments section under a webcomic.

RTFM.
Look on the food bag. It will have a guide for how much to feed a cat of various sizes. Feed the appropriate amount. No more, no less.

Honestly, I’m slightly surprised ‘tattoo printers’ haven’t become a thing for those little ‘formulaic’ tattoos. (Stars, hearts, bird silhouettes, etc.) People love getting inked up and I could see it making those sorts of tattoos absurdly fast, albeit probably much more intensely painful due to the speed.