That's somebody's job, but I don't see it as free labor.

That's how you choose to see it, but you also did work for the bourgeoisie for free

Look at it this way: nobody has ever had their workload lightened by it. Companies have just cut positions and hours instead.

With the cart example, yeah, cool, that's good. I could fold every messed up shirt I ever see in a store and that would certainly make some workers day easier, but I'd also be doing work for free

To be clear since people seem to regularly confuse arguments for endorsement, I use self checkout, but it is what it is. I'm doing something someone was paid to do, for free. That's the facts. And if you think about it, when i do so, I do especially valuable free labor because I used to work retail and can easily deal with it. Even if it's slight it's still a form of exploition and it's galling to think of my past exploitation providing value to this current form. I was a good little retail worker long enough that I can add to walmart's throughput by not clogging up a checkout, yay