"It's a slippery slope to stop pissing in the parking lot. Once they get you pissing in the toilet, then they will expect you to just hold it in."

It's not a slippery slope; you're just pretending it is because you're a lazy, selfish, obnoxious chud, and pretending it's because you care about the people who clean up your mess is insulting to them and the people reading this. I hope you also throw your trash on the floor because that helps them hire more janitors, you little slob.

I've gotten into the habit at my grocery store of taking a cart from the corral into the store rather than walking in and then taking one from inside the building. It's functionally no effort for me and its one less time a store employee has to walk that cart back into the building. The people who work at that grocery store are my neighbors and townsfolk, every cart I bring back in on my way is an opportunity for them to stand around on the company dime.

Not quite. Stores typically do flex scheduling instead of a steady 9-5, and will only allocate enough employees to meet basic demand, and are cycled between stations.
There's never enough hands for someone to be just a cart grabber. Once you're done with that task, it's back inside because that weird robot thingy saw a sticker and is calling for a cleanup.

Dumbest take. They put the corrals out there because they expect lazy people.

Whatever helps you sleep at night