I agree that would be a jerk move. I would not do that(but then too I also would not invite a vegan over to my dinner party anyway)
But here is the metaphor question: As the dinner party host do you provide a special vegan part of the meal just for this person(or worst of all, make the whole meal vegan just as that one person will be there) or do you say to them that they should bring their own food?
I do like ''the net'' and I have not heard this term before. and it has not come up in other threads. I found it on another forum. I cast a lot of nets. I don't really like ''hooks'' as they just get annoying like ''sigh, ok players plot hook 26'',.
I think this is a good point. Somehow people do jump to if there is any railroading it equals the whole game being a railroad. But that is not true for most games.