I mean when AB did Calm the Fire, that was a 6-minute track that put more of an emphasis on lyrical content and vocals (moreso than usual) rather than big guitar riffs and solos.
As for A Dying Machine, I do agree, it's indeed different than the usual Tremonti formula, but it still works out well for them. Hopefully, it works a lot better in the context of the concept of A Dying Machine, but it's still a good standalone songs. It's also a good thing that Mark is writing lyrics about stuff that seems to go outside the usual post-grunge/alternative metal motifs (which can be great, but can go stale quite fast).