Are you claiming that there are no concepts that are beyond your critical-thinking capability?
If not, what objective standard are you using to define it an 'insult' to point that out?
Nope. The concept being discussed was obviously the concept that you were implying I didn't have the critical thinking capability to understand. All other concepts are irrelevant.
If not, what objective standard are you using to define it an 'insult' to point that out?
The standard that it is rude to point out a perceived deficiency in someone that doesn't concern you directly and without offering something constructive to help them overcome that deficiency.