Is there a single word (or better set of words) to express e.g.:
- "liberalism avers the primacy of the individual", or
- "Johannes renders his masculinity essential?
Since, the meaning of primacy is the state of being the most important or first in estimation, I would say that a term that means to elevate in status would be a good substitute for aver the primacy.
Exalt: Means something similar to this. It is to elevate in estimation by praising.
You can consider emphasize [AmE] (or emphasise [BrE]) also.
Special note: I would like to emphasize David M's answer "exalt" also, especially for the first example.