I assume what you're implying is that you can't put a tent there. Okay, why not fucking say that then? Homeless people around here rarely use tents, for reasons that I do not know because I am privileged enough to not be homeless, and they could probably just arrange their stuff around those shapes, put their mattress between them and go to sleep - which is why "tent" isn't the first thing that popped into my head.
Thank you for making me jump through hoops to understand a thing.
"Look at this cool thing I found!" It can just be nice to share stuff with other people. There doesn't need to be a deeper reason, it's a function of humans being social animals.
This includes motivations such as wanting to discuss the thing with other people, to compare your own view with theirs, or simply to satisfy the need to yell at someone.
Edit: typo