Not sure what your stance is, first you say I shouldn't put all gay people in the same box as the activists. On issues like this example I don't usually see any saying it's wrong and disagreeing and many non gays who are supporters also attacking. So if you feel forcing people to do what they don't want and trying to shut them down is out of line then that's great to hear. But then your next comment is "maybe we should wait ...for society to come around" which seems to then reverse your previous comment and is in support of those activists.
I have not seen any cases, just like this pizza owner, when gay people enter their shop or place of business, people are telling them to leave and a sign on the door, "no gays allowed in this restaurant, etc". The issues are people who do businesses and work that involve traveling. If you are a caterer, dj, photographer, etc, and you do work that involves driving to a clients location, you should have EVERY RIGHT to refuse a job for any reason. Like with this pizza instance, there is a big difference between a gay person entering the restaurant and them refusing to make them pizza vs them asking them to drive to, attend, and cater their wedding. If they don't want to then bring your cash to somebody who will. Tons of people and businesses who'll love getting tons of extra business from others turning down gay clients.
But more clarification on the reason I'm seeing things as I've said.......initially the 'activists' were going for equal rights, not trying to force anybody or shove things down throat, peacefully and decently winning over support. Then suddenly laws start getting changed and they start getting more rights. Now the activists start changing and getting aggressive with those who will not only not support them having rights but then attacking as in this instance any who claim they don't agree w/ the lifestyle or wouldn't do a job involving attending one of their events. So no more just wanting equal rights and stuff, now if having an event or wedding and a person is asked to attend or work at it, they better say yes whether they like it or not.