The Bubba Effect
Grandmaster
No one tailed any one. And you're right, they were very pleasant people and I enjoyed the hike out with them. You win, benefit of the doubt given. No harm was intended here (you seem to be reading some.)
We need to remember that the OP was asking whether he should care about stuff like people not signing out. (at least that's how I read the op)
My answer: nope. No blood, no foul. Maybe they broke a rule, maybe they didn't. After a few more years of hunting, you will have a better sense of what's important and what's not. By that time, any time you see another hunter in the field and they're not drunk as skunks and shooting at deer out of season with an sks across a highway, you'll be thrilled at what responsible hunters they are.