Is saying "Allah knows best" or "Ask the people of knowledge" regarding the ruling on smoking considered a rejection of the truth and an act of arrogance?

Smoking is forbidden, whether in small or large quantities. Contemporary scholars have agreed upon this due to its grave harm. Saying "ask the scholars" or "Allah knows best" to someone who asks about smoking is not a sign of arrogance; rather, it is referring knowledge to its rightful possessors, and that is a good thing.