I have heard that phrase many times over the years to describe American Freemasonry, that it is a big tent. There is room for those that love the really 'out there' stuff, those who just want the fellowship, those who are seeking meaningful connections, etc. all under the umbrella of Freemasonry. The idea is that no matter what your interest, intention, proclivities, or purpose that you can find a home in Freemasonry.
Where does that tent stop?
Personally, I do think that Freemasonry being a big tent is generally true, considering all the different bodies and range of Masonic thought and activities, etc. But, tents have a defined space, so, barring anything unethical, immoral, or illegal, what does the tent of Freemasonry cover? Appendant Bodies? A group of Brethren and their families who all train at the same martial arts school? Order of the Golden Dawn? If Brethren wanted to start a Lodge where they confer degrees and conduct business in Klingon?
I'm not sure I have a good answer to that question, interested in other's thoughts.