Good post.
Couple thoughts:
1) Like you said, I would call the "artificial/contrived" constraints of BitD's setting (Doskvol) "System Force" or perhaps "Premise Constraint." There are also other aspects of the game that keep play bounded as well; the siloed "3-phase" and scene-based nature of play, the lower power curve of the PCs/Crew, and how the Heat mechanics force the players to always consider their profile.
2) Relating directly to the above, consider how close this resembles Basic D&D vs Expert and Champion:
a) Constrained setting of the dungeon in Basic with resolution mechanics that work precisely for that setting + a lower power curve of PCs + Wandering Monster/Exploration mechanics that force the players to consider their "Exploration/Resource" profile...
vs
b) Moving out into the wilderness and urban settings for E and C (which means more options for declared actions) + resolution mechanics that become less focused/fit for purpose + higher power curve of PCs (therefore more answers for obstacles and less pressure-points) + system machinery/clocks (Heat and Wandering Monsters) does less work to force players to consider their profile.
3) Torchbearer mirrors Blades in all ways above (with difference in nuance).
4) Games that have scene-based resolution and/or that have "Journey mechanics" do the same thing; they constrain in the way Doskvol does while they focus/distill/narrow action declarations toward the specific scene premise and resolution mechanics to achieve the scene's "win condition".
I think there is also another thing that happens when it comes to the "System Force" of things like the "premise/setting constraint" and Blade's Duskvol and Basic/Torchbearer's adventuring sites and Scene-Based-Resolution/Journey mechanics (D&D 4e, Cortex +, Dungeon World among others); things that constrain a GM away from Force.
Some players can feel somewhat annoyed in their OODA Loop because, due to the zoom/abstraction and level of constraint, they experience a kind of sense of "information loss" (that is the best way I can think to put it) which screws with their transition from Observe to Orient and then from Orient to Decide.
I don't experience this, but its clearly a thing and likely. Some players ( probably
@Nagol ) experience this only when their expectations of the game aren't met. Nagol can happily play scene-based resolution games (Fate and probably Cortex+) but he doesn't want scene-based resolution in his D&D (hence he didn't like 4e D&D).
I guess what I'm saying is...freedom from Force can come with a price that may feel like a prison to certain players (I'm using "players" as a catch-all; so participants).