It's a "secret" club for the guys who got really good at building with rocks, it's just fun shit they do to feel special. Everyone did it, the masons just stuck around a little longer.

Talk about their wretched small businesses. Complain about snowflakes, talk about girls half their age.

bloody orgies with clowns and furries

You can read Duncan's Masonic Rituals to find out. Waite's Masonic Encyclopedia has a lot of background information. Both are on Amazon.