I often wonder about the intentions of those who post of these types of comments. Being charitable one might suppose the parent is offering a backward sort of compliment to the authors. Something like "Great job, beyond my capabilities, I'm glad someone is working on these things".
There are a lot of less charitable formulations; why should other readers care about parent commenters insecurity? Does parent commenter not appreciate the work that goes into studying these topics? Was parent commenter told they were "smart" to often as a child and never learned to exert themselves academically? Etc.
Although this post is mostly in jest, I really am curious what prompts these comments, comments of this type are quite reliable.