yes, okay, I agree that there are different possible interpretations. In any case, a rewording would we good if the current system is kept.
But the problem I have with the current implementation is not just the description, it's also related to gameplay. In some cases, the bonuses for friends may be seen as more attractive as the bonuses for allies (for example when playing as Germany and going for Science Victory). It is then preferable to keep CS relations on the intermediate level of only friendship and preventing alliances, and it feels strange to me to have a situation where it's incentivized to not complete CS quests.