CLUB VISIBILITY
Pick the room
Clubs are public or private. A private club's feed and leaderboards are for its members, not for anyone browsing the club list.
SHARING, IN PLAIN TERMS
Share the work.
Keep the choice.
Clubs are better with activity to talk about. Which of your sessions appear in each one is up to you.
THREE SEPARATE SWITCHES
Your club. Your sharing settings.
Your log and your insights work without any club feed at all. Club visibility is one choice, sharing your activity is another, and connecting an external service is another again.
ACTIVITY SHARING
Sharing is per club
Each membership has its own switch. Member of three clubs? Your runs can show up in one and stay out of the other two.
CONNECTED SERVICES
Connect what you use
Strava, Intervals.icu and Discord exchange only the data their features need. Rather stay disconnected? Uploading files by hand works fine.