The homeless and those issues pretty much only exist in the tourist areas near downtown, the tenderloin, soma, etc. The tourists come and see all of that and get the idea SF is some horrible dystopia, but unless you live in those areas, it's not a problem. I lived in Noe Valley for 3 years and never ran into a single problem from your list. SF is so much more than downtown.
If you want evidence of widespread upheaval, just look at California's weather data over the past few decades. It's consistently gotten hotter and dryer, causing more and more fires that are killing hundreds of people per year and destroying entire towns. It's not about believing in climate change, it's about *understanding* it. It's very real.
They also own the client so it'd be trivial to send the data back to Facebook after it's decrypted on the client. It'd be really stupid to do that, but it's Facebook.
The reason the WiFi and Bluetooth controls now work the way they do is to leave Apple's accessories (Watch, Pencil, etc.) connected and working while disconnecting you from other networks and devices.
I also sell 3D printed items and they did the exact same thing to my account. I just emailed them and they had me send pictures of my workspace and process to prove my items are "handmade" and my account was restored within 48 hours.