Lol, he's kinda not wrong, actually...
Obviously, online is a 'safer' space, but I've met plenty of zoos (and some of my best friends) at cons and other RL events -completely- outta nowhere... I legit do have pretty good 'zoodar' though =p of course, this was several years ago back when nobody really gave too much of a shit about what anyone else did XD
But basic proper RL etiquette kinda says that you don't talk about 'porn stuff' with strangers unless it's, like, already out there for some reason (you're in the dealer's den and commenting on a pic, you're at a room party and the convo is going that way, whatever.. (like, you don't just bring up dog dick, or any dick for that matter, just completely out of the blue)... So, by naturally navigating the conversation, you can learn a lot about people by listening and asking some innocent but targeted questions (if you can). A lot of zoos actually tend to out themselves, albeit through a kind of 'code' or signals that only other zoos pick up on -- usually because -most- other zoos want to find other zoos that they know they can be cool with, too. At least in my experience. Given that, if you're keeping your senses tuned to the little signs, and enough of them start stacking up, it's usually not too hard =p
I know that doesn't help much if you don't have any experience or if you don't have the capacity to go to cons (or aren't a furry), and I'm -not- suggesting you try and decipher the 'zoo code' if you're completely new, by any means!!! But I can honestly say I've met well over 100 zoos -very- naturally, effortlessly and casually like this... so... it is a thing. It works for me at least =p When you get some more experience, just try and keep your ears perked for the zoodar! ;-3