I loathe and despise "open/loose/DF/whatever," and especially the insistence and enforcement thereof, so, hell no. And, in fact, had you read the fullscreen "Message of the Day" when entering Shrunkland or BiH, you'd have seen that.
(Mind you, this is distinguished from the old voluntary, mutual tunneling and whatnot. That's fine.)
However, there are settings in place to discourage and penalise adjusting and 180-grinding against a wall ("the double bind seals that take 3 or 4 dbs back and forth to pass") in both Shrunkland and BiH, the former being a bit harsher than the latter. That is primarily accomplished with the combined use of CYCLE_RUBBER_DELAY and CYCLE_RUBBER_DELAY_BONUS. There's stuff about those settings elsewhere on the forum (usually involving me).
With respect to the turning in BiH, that's simply CYCLE_DELAY 0.1, which is also the default. I personally dislike and object on principle to anything less. I don't think that doublebinders (or more) should be given a turning advantage over single-binders, hence that setting. (There's still an advantage, but it's not nearly as pronounced.)
So, I think you're conflating settings and their effects. Neither doublebinding nor CYCLE_DELAY are what make adjusting or doubling back against a wall possible. It's the rubber code and settings that do that, primarily. But when it comes to preventing
that sort of behaviour, the three settings I've mentioned here to work in concert with one another. There are other settings that can be adjusted to tweak and refine that, as well, such as _MINADJUST and the various MINDISTANCE settings.
By the way, you might want to read some of your own older posts. viewtopic.php?f=46&t=2433