The detox/immune-system metaphor seems really suspect in other words. You could just as easily argue that there is a "virus" (the changing political realities, new realities dawning on us), and that ignoring the "virus" or "symptoms" will make the adjustment that much more traumatic, the later we accept that it's happening. Or to switch the connotation, perhaps instead of a "virus", look at it as a "disruptive innovation" - where if we act as an entrenched incumbent, we will be disrupted as our competitors rewrite the rules, and we will be too far behind to pivot successfully.
Letting the community process the new inputs vigorously might seem more traumatic in the short term but it could also make us stronger overall.
This just seems counter to the principles that I appreciate at HN.
I think they're concerned about things like community civility. Instead of the detox metaphor, imagine a community that is riled up about something, and is starting to riot - that is, to fight with itself. The authorities declare a curfew to get all sides off the streets and not fighting with each other for long enough for tempers to cool down.
Unfortunately, that analogy breaks down, because we can all go just outside the city limits (that is, to other sites than HN) and get all riled up again there, and be ready to rumble here after the curfew ends. Still, it strikes me as an experiment worth running for a week.