Those VPN providers need to get their internet connection somewhere and if you terminate your VPN inside USA (which you'll have to - to get decent speeds and pings), you'll just move the point of data collection.
Sure but if you have a VPN from a provider with enough customers I and use TLS to connect to websites, associating the browsing activity to a particular customer is difficult even for their ISP. Some of it could be traced back by traffic analysis, but it's at least more obscured than if you are using TLS from your own connection without a VPN.
