That's a very reasonable definition, in that it does encapsulate most every instance that comes to my mind. However, if you'll allow an overly semantic exercise, I think the pushback that you're receiving to your use of the term lies in the distance between your definition, and:
the GM unreasonably exercising authority to the detriment of the players' capacity to shape affect the fiction.
I think this one more closely tracks to the more common usage of it.
I don't see how "shape" and "affect" aren't synonyms in this context.
As for "unreasonably", I think I've made clear what my view of the reasonable and unreasonable is. Including via worked examples, plus references to a range of hardly-obscure RPGs: 4e D&D, Burning Wheel, AW and DW, etc.
I don't see that I am obliged to take the same view of what is reasonable as other posters, any more than they are obliged to take may view.
I write this just to try and to point as to why when you say:
I deliberately used the word "puzzled". Someone might disagree with my view, but that doesn't mean they should be puzzled that I hold it - are they really unable to envisage that someone else might draw the boundaries of reasonableness in a different place from them?
Your definition of railroading has nothing to do with the
standard definition of railroading:
Railroading
Railroading is a
GMing style in which, no matter what the
PCs do, they will experience certain events according to the GM's plan. In general, this is considered a flaw, displaying a lack of flexibility, naturalness of the
scenario, and lack of respect for
meaningful choices by the
players.
Railroading as a pejorative
Because railroading essentially negates the central activity of a
role-playing game, it is generally used to refer to a dysfunctional role-playing style. Consequently, it is often used to characterize whenever the GM constrains PC choices to the detriment of the players' enjoyment.
Why do I care what some wiki posts? I mean, that discussion of "meaningful choice" is terrible, and already assumes GM-driven play. It cites one person, MT Black. I rely on the ideas of brilliant RPG designers such as Vincent Baker and Luke Crane.
Here is a definition of
railroad that informs the one I offered upthread:
Control of a player-character's decisions, or opportunities for decisions, by another person (not the player of the character) in any way which breaks the Social Contract for that group, in the eyes of the character's player. The term describes an interpretation of a social and creative outcome rather than any specific Technique.
So I am interpreting social and creative outcomes, through my eyes as a player. And I am pointing to both opportunities for decision ("framing" and "stakes") and decisions themselves (ie what flows from them, their "consequences").
My definition, set out upthread, and incorporating a helpful gloss suggested by
@Xamnam, is this:
Railroading, of RPGing, means the GM unreasonably exercising authority to the detriment of the players' capacity to shape the fiction.
I think that I have as much insight into this as does MT Black.