A guy disagrees with the idea of storytelling
This might not be a big horror story; hell, I might be the wrong one here, we'll see.
Also, obligatory: I'm not a native English speaker, so please, forgive me for any mistakes.
A couple years back a friend of mine had an idea for a discussion panel at a local fantasy convention, it was called "A coven of DMs" or something like that. The basic idea was to gather people who DM or have some interest in that and share tips, stories, etc. Since I've had my fair share of experience on that side of the table, I've been invited to co-host.
We've prepared a few discussion prompts: weaving in the characters' backstories into the plot, how to deal with trolling, etc. It was mostly a freeform thing, where we'd share our experiences first, invite the audience to do the same, we'd talk about it for a bit, once everyone was satisfied we'd move on. The whole thing was going really smoothly and honestly was a blast, until about midway through, when it was time for a prompt called "How do we manage to keep the PCs on the right track in the plot without railroading them?"
A few points that I honestly don't remember now were made, again, a nice back and forth between us and the audience, ideas flowing nicely, until one of us said that sometimes, if we felt like the players were about to miss something very important for the plot, we'd move the thing around the space to make sure that they will come across it. (If it's unclear what I'm talking about - let's say that the players are exploring a basement. There are a few corridors they can go down, but the whole place is creepy and they don't want to see the whole thing, so they'll only explore one of them. In that case, we'd move the Very Important Item so that it's down that corridor, not the other one. That way everyone's happy - the PCs aren't walking around aimlessly and we can move the story forward, that's the gist of it.)
One dude took a huge offense with this line of thinking. What ensued was a fairly amusing exchange, which I'll try to paraphrase here:
Dude: "Well, you can't do that! It makes the story linear. It's railroading. If I found out about it, I'd really dislike it."
Us: "But that's the whole point. You wouldn't find out about it unless you were looking in the GM's notes"
Dude: "Well I'd find out about it!"
Us: "How exactly?"
Dude: "I just know these things! I have my experience! I'd leave the table that did this. You can't force the characters in any way, it's railroading."
Us: "So if the characters wanted to ignore the plot altogether, you'd be fine with that?"
Dude: "Yes, we're there to provide the world for the PCs and anything beyond that is railroading. You shouldn't force the players to do anything."
We agreed to disagree and move on. Some time later, when we were talking about one of the last topics we wanted to touch upon, the dude got up, said "If you want to force characters to do something, WRITE A FUCKING BOOK." and left. It was completely disconnected from the topic at hand. What ensued was a few seconds of silence followed by "well, anyway". We wrapped the whole thing up without any further incidents.
From time to time I still wonder what this dude's deal was. We were reminiscing about it yesterday and thought it's funny and amusing enough to share. Dunno if we were in the wrong at the end of it, but honestly, I don't really care.