Not using gmail doesn't solve that. If you cross a border you can have your device searched and denied entry if you don't cooperate. If you post on social media, the data is in plaintext for the world to see.
Sure. And if you say things privately you have chosen to have privacy. Which is very limited if you say your private things on a US service and don't feel like having the US randomly read them and deport you.
That was my point, I'm happy to see that we agree :-).