He was a fair amount of time out from the death of his father, he had no reason to be suspicious of his mother and sister not being around all the time, and while you are right that he was recently embarrassed he was not yet showing any outward awareness or distress about the ongoing circumstances of the village. If the intent of that scene was for it to be about Noah ignoring it because he was traumatized then N_Taii did not do an adequate job of presenting it before, during, or after the scene.His father died at that point, recently, he lost the trust of his closed ones and is looked at as a fool and had to work himself to the bone and humiliate himself just to earn Zeno's trust again. He was in heavy distress, his mother and sister always missing and him becoming more and more alone. He definely had some denial in him to cope with the change of the heroines that were his only family and hope at that point. We even get confirmation when we see his thought after seeing that blue haired girl that liked him get blowbanged in the soldier camp late game. He activelly supressed any suspicion he had just to stay above the water.
I dont get how people keep saying he has no personality. I had the most sympathy for him than maybe any other ficticious protagonist. And its not just self insertion, I do not see myself in him, I see a kind and sweet and adorable soul.
As for people saying he has no personality... it's because he has no personality. Noah does not speak and the only response has to anything that goes on around him is to either smile or an emote bubble. Things happen around him and he just stands there and occasionally a bubble with a squiggle appears over his head. The biggest contributors to personality in a video game are actions and speech, and Noah is an extremely passive mute.