I waded into PIA's client enough, months back, to observe that it was using OpenVPN. Along with its reputation, I decided I had enough trust for my use -- avoiding connection monitoring/cracking on public WiFi and keeping Comcast and Verizon from data mining me.
I do sort of wait, with all these services, with breath half-held for some other shoe to drop. Given the rubber hose and lead pipe legal and extra-legal methods available to various and manifold "three letter agencies".
I hope the open-sourcing of the client leads not only to increased trust, but also to some functional improvements. Such as being able to leave PIA switched on on my phone while tethering to it. Without having to root the phone and get into routing scenarios that apparently Android is not designed to support. So, I guess that's an Android problem. But maybe there's some way to address it at the client level.
Anyway. PIA keeps taking substantive steps (e.g. prior financial support for open source projects, now open-sourcing the client, etc.) that put it in a good light.
P.S. I don't mean blocking by Netflix and the like. I mean, archive.is, Google (prove you're not a bot...), commercial services I use, etc., etc.).