Christians are notorious for acting like used car salesmen, treating non-Christians as if they’re standing there holding a blank check and sporting a hard-on for unreliable vehicles.
If a couple of gay guys want to throw the gayest, most fabulous wedding of all time, the only way it should offend you is if you weren’t invited.
Like ugly Asian babies, valid superstitions don’t exist. At best, any perceived effect of a superstition is you merely psyching yourself out. Think of it as an asshole placebo.