Is there anything objectionable that I must denounce in the statement of my older brother – who considered the sound of the Quran coming from my room a disturbance – taking into account that he may not have intended to insult the Quran?

To say that the questioner's brother did not intend the Qur’an itself, but rather intended to raise his voice with it, is something that should be avoided, and people’s circumstances should be taken into account. The Prophet, peace and blessings be upon him, forbade reciting loudly because it causes annoyance and disturbance to those praying and others. The scholars have stated that the reason for this is that it causes annoyance, interrupts recitation, and causes disturbance. Therefore, what her brother did is not an objectionable act that must be denounced, although it is better to choose appropriate words.