Do my Thracian generals get manly beards or am i unlucky?

This is actually accurate... I can confirm as a Balkan man myself, we still wear pants to this day, heh

Ironically this is what the Balkan people would have looked like at that time according to roman and Greek sources. Contrary to popular belief, the Balkans are not a warm, sunny, sub-tropical place like the Mediterranean, and the people who lived there dressed accordingly to the environment.

I think all geto-dacians, balkanic tribes had trousers and boots for real.....

Typically because all units have trousers and boots, and because I just rearrange unit gear until there's a thematic consistency. For example, rather than a unit have 5 different types of helmet just because 'history', I give them whatever helmets units of the same type/faction have. I also increase diversity in armour/clothing/shields by adding other faction items that look similar. The oval shields include Numidian, Celtic, and Hellenic shields, because they all look similar yet different.

Why do you say it's historically inaccurate ?