Huh, I don't get that impression at all (at least not so much that it overpowers other impressions). Any group of people travelling for any reason can have scouts.
I guess my main problem with naming a baby Scout after Scout Finch is that she's just the everyman character who observes the book but doesn't really do much. I understand why you'd name a baby Attius after Atticus Finch because he's an impressive character, but Scout is more like a proxy for the reader during most of the book's events. It has been a while since I've read it, but from what I remember, Scout just watched Atticus do the main plot while she basically did random side quests. Perfectly good as a storytelling method, but not very inspirational to tell your child "this is the character you were named after".