It's because dressing up in animal costumes is far more marketable than you know, the whole fandom being fetish centric to the core. Free HIV tests at cons and
scenes out of Rainfurrest aren't marketable whatsoever, and neither are scandals.
Sam is a good PR guy. He might wrestle too much control over documentaries or ban people for portraying the fandom in a bad light on TV shows, but his goal is to make sure that the locals think furries are cool and contribute dollars to the city's economy. Unlike more mainstream nerd cons, furry cons tend to draw a less normal clientele so Sam has to try himself to make the fandom look better.
Abusing service animal policies has already become enough of a problem outside furry conventions. Airlines have been dealing with people trying to bring emotional support peacocks and pit bulls onboard planes, when it's clear it's an excuse to bring your pet on a plane.
In a furry convention it's exponentially worse considering how zoophiles keep managing to show up. Putting that aside there's also the clear stress on the dog from being around thousands of people, as you can see from the video.