sis, sorry but I disagree with that strongly. When someone get such questions and then ask about what he is thinking and then got the answer to that then his Iman will grow even more than what it was when he has those wonders.
As for the brother's questions, I don't see anything wrong with him asking so he can strengthen his Iman. He didn't touch any aspects of the perfection of Allah Azza Wa Jal. Its required to
ponder over the creation of Allah and see how can this universe be created in such a very accurate way, its even mentioned in Quran here:
إِنَّ فِي خَلْقِ السَّمَاوَاتِ وَالأَرْضِ وَاخْتِلافِ اللَّيْلِ وَالنَّهَارِ لآيَاتٍ لأُولِي الأَلْبَابِ (190)الَّذِينَ يَذْكُرُونَ اللَّهَ قِيَامًا وَقُعُودًا وَعَلَى جُنُوبِهِمْ وَيَتَفَكَّرُونَ فِي خَلْقِ السَّمَاوَاتِ وَالأَرْضِ رَبَّنَا مَا خَلَقْتَ هَذَا بَاطِلا سُبْحَانَكَ فَقِنَا عَذَابَ النَّارِ(191)
Lo! In the creation of the heavens and the earth and (in) the difference of night and day are tokens (of His Sovereignty) for men of understanding, (190) [Such as remember Allah, standing, sitting, and reclining, and consider the creation of the heavens and the earth, (and say): Our Lord! Thou createdst not this in vain. Glory be to Thee! Preserve us from the doom of Fire. (191)
[Al-Imran:190-191]
So even Allah want us to think about what is around us sis so we will strengthen our faith!!
Assalamou Alaikoum Warahmatou ALLAH Taala Wabarakatou sister danah
Allah exists. There is no doubt about His existence. He exists without being attributed with a manner of being (how) or a place. No creation resembles Him, and He is not comparable to any of them. Suratu-Ibrahim, Ayah 10 means, “There is no doubt about the existence of Allah.” The Prophet, sallallahu ^alayhi wa sallam said, “Allah existed eternally, and nothing else existed.” (Related by al-Bukhariyy and others.)