Absolutely. And I stand by what I said. This kind of "expressing a lack of understanding", especially if repeated or emphasised on a permanent basis, is an act of making you feel good about yourself (not you in particular, people in general) through pointing out others' shortcomings.

I guess it's a question of how and especially how often. I can also tell from your OP and other posts that you are mostly fascinated by this, so context plays a role, too.