Should I flag a comment when the commenter doesn't really understand the background of a field. e.g. Servers (Sys admin questions), networks (Net admin questions), web dev etc.. or the initial question and provides bad feedback on other answers?

I come across alot of these type of comments from serverfault users, who don't really know much but the related field of the question and comment anyway.

Sample.

Answer 3 comment. would you flag?

Question.

Why should I use this service or scheme in my office environment when using ACLs on my Cisco border router 6509. Is name acls better than using extented ACLs or should I move to a ISA environment?

Answer1
look at dedicating a cisco ASA firewall... etc
comments..this is a better option but is costly and may not suit your environments needs

Answer2
ISAs are good if you have enough dedicated agents and server power.. to use in an environment when you are blocking this.....
..comments

Answer3
ACLs are complex... name and extended are virtually the same in almost every way. You should read these articles.... web links... blah blah... In order to understand why you would use one over the other and why they are different.
..comment... No one users ACLs anymore.. dont listen to this answer

Hope this example helps