It could be an Italian themed wedding, or bachelor party, rehearsal dinner etc. The reporter who first caught this story looking for ‘bigotry’ just happened to run with the response of a pizzaria, could have been any type of service business really.
But, after 1000 phone calls, and many varieties of food outlets, that 1-out-of-100 pizza places declined to cater a homosexual wedding, and it became a national scandal because of the widespread and debilitating prejudice against homosexuals.