Trusting something goes beyond using it. You can use a product you don’t trust if you have to. It just means you’ll have to be a lot more careful with how you use it and have no expectations of privacy.

It means you don’t let your guard down and don’t give that service anything more than you need to make it work.

What I’m saying is to never give Google or FB something and assume they would always be on your side. Assume the worst even if you continue to use their services.