Hm actually I do not agree.
Like. Yeah I learned I don't have to get rid of it within a week. But it's just so interesting to decide whether it's worth using the powers you get - or not. In the beginning, it seems obvious to avoid the powers, because you may be afraid it quickens the transformation into a mindflayer. But then you learn "hey, I'm kinda safe as long as I do nothing", and at the same time, things pile up that may rise my interest in taking advantage of the infestation.
I don't think there is a need for urgency since they give so many hints on why it might be worth using the tadpole. And maybe, at some point during the game, you won't be able to evade using it like you do in act 1, so the stress of choosing between pest and cholera comes up.
For example, in my first playthrough, I never used the tadpole, but you learn this is just part of something bigger (a whole worship scene going one.. a cambion offering a deal... may have missed other points), so my interest has shifted to "wow what is this all about?" and rather than thinking "oh god need to cleanse myself - right now", I really want to see where this goes and how much I will be tempted to give in to the tadpole, the cult or Raphael.
I think players asking for urgency comes from the reveal (when thy showed the first cutscene and showed some gamplay) suggesting this game will be time sensitive. If you try to look at the game without expectations: Would you still ask for urgency? The decision making is the strong point of the game for me and I wouldn't want this forced out to create urgency.