Misconstruing Dismissive Clarification As Internal Consequence

Martin & Rose (2007: 140):

In contrast, arguments may be dismissed with anyway, anyhow, in any case, at any rate:

There have already been reports of taxis putting up 'out of service' signs and people changing seats on buses when confronted by dark-skinned people —
as if changing your seat would save you if a bomb went off anyway

Blogger Comments:

To be clear, in SFL Theory, the conjunctive relation here is dismissive clarification, a subtype of elaboration, not consequence, a subtype of enhancement; see Halliday & Matthiessen (2014: 612-3). That fact that the relation here is not a subtype of consequence can be demonstrated by replacing the conjunctive Adjunct with the most general form consequently:

as if changing your seat would save you if a bomb went off consequently