I would expect that they do. I'm not really offended that my traffic is logged by someone and could be traced back to me by someone with the time and resources (law enforcement?).

But assuming that AWS/DO, and their uplink providers (L3, etc) have the goal of selling reliable servers and internet, and aren't building up consumer ad profiles to sell me stuff/sell my data if it looks like one server or IP is maybe a VPN.

You can't as well; you're just moving trust some place else. Choose your own poison :)