Yes, just as everybody is assumed to have 10 across the board in attributes, two arms that allow manipulation, two legs that enable ground movement, two eyes that give visible-light vision, and so on, everybody comes with a basic package of social abilities (a native Cultural Familiarity, Native-level comprehension of a language, Average wealth, Status 0, a personal TL equal to that of the ambient society, no Social Stigma, etc.). If you lack this stuff, then you have disadvantages:
- Bestial [-10]
- Dead Broke [-25]
- Innumerate [-5]
- Low TL [-5/level], down to banging rocks together at TL0
- No Cultural Familiarity [-1], equivalent to removing any other 1-point CF
- No native Language [-6], equivalent to selling back one's native language from Native/Native to None/None
- Social Stigma (Uneducated) [-5]
This is actually worse than an animal's lot in life, because animals don't have the form of beings that are normally socially adjusted, tool-using, object-counting sapients with language, and that are judged as such. (Granted, they have -50 points or worse for IQ 1-5, Will 10, and Per 10, but still.)