Yes. Vanilla dwarves will never built castles, and actually have no sites to visit. That's why I modded them to use human structures for the time being. A human civilization could assimilate large quantities of dwarves, but the dwarves will act like short humans, and acquire only human traditions. No steel. I think any clothing or armor not on the dwarves at a site will also be human-sized, as well. If you found steel armor in adventure mode anywhere but in a night creature or megabeast's lair, you're almost certainly modding.
As for bogeymen; I never generate worlds with them anymore. At least not intentionally. Sometimes I play on worlds others have generated or generate one without changing the parameters, and in those cases I usually keep companions around me. When that fails, and I am surrounded by incessant assholes, my skills are almost certainly too low to actually fight them (they are talented in all unarmed/defensive combat skills, so you must be talented or greater in a few skills to really stand a good chance even 1v1.) and I try to run and possibly hide. If my adventurer has enough skill, and hasn't been cursed by a mummy (which is a good excuse to just flat-out retire), I'll try to fight them by skirting the group, keeping them scattered, and fighting them 1 on 1.
So, Rule #1; don't bother fighting them if you're only competent or something at best, or unless you're a dwarf.
Rule #2; only fight them 1v1. Never let two or more bogeymen (or any opponent) be adjacent to you at any time.
Rule #3; Agility, agility, agility, strength, willpower. You MUST be able to outpace them, which both agility and strength affect, and you should invest in willpower to avoid instantly passing out from anything.