Half the positives on this list I find to be kinda crazy to be positives. For example having Facebook Messenger handle your SMS messages. Really? You want to voluntarily give all that info to a company as user hostile as Facebook? Less drastically I question the need to hide apps away in an app drawer. If you don't use the app then just delete it. Am I alone in feeling that way? I'm glad he's happy and the Pixel seem…
Facebook SMS support is client side only. They do not get your texts in any way.
I don't think they are probably doing that, but there's not really any way to prevent them from doing that.