Obviously every disability is different. It's a meme, I'm not writing comprehensive policy here
Edit the point is if you normally navigate the grocery errand, make it to your car without issue, are not incapable of returning the cart, but choose.to.just ditch it because you are lazy, then the meme is talking about you.
If you aren't able to move the cart any further, ideally park near the return spot, or tell the staff, or get the accomodations you need.