Fred,
FB must maneuver. FB TOS (their constitution) changes regularly. FB removes( broadcast via web pages) upon complaint & moderation.. TOS rules apply as needed. FB users agreement clearly states they retain ultimate refusal. NARSOL itself has a page.
The reluctant cake baker V same sex couple seems analogously. Except the SO cannot walk in the door, TO ASK FOR A CAKE!
This fight is the frontier line combat for electronic liberty of mankind. Heads up to the staff at………….. EFF.org!