How does setting up Tandem t:connect data sharing work?

I gave my doctor my password, and the office contacts me from time to time for tweets.
Most of the time I ignore them because I feel like I’m in top of it.
However my doctor uses it to renew prescriptions so it’s nice to not have a delay.
I am type 1 diabetic. There is nothing exposing about having my glucose readings.
Even if it got shared, who cares. It’s just glucose numbers.
My medical record is quite different.
But this is not a worry for me