I'm going to stand with A|R here... Not just because I'm ex_Regiment myself but because I believe he is right in what he is saying.
I'll start by stating that I am an athiest...
As such, I have to agree with the OP... Some of the stuff put up in the condolences threads can be a little hard to stomach, for me. For some, I'm sure, it's appropriate and right, (not all atheists believe that theism is an evil to be ridiculed and rejected - I actually think that "reasonable" religious beliefs are extremely beneficial to both the society and the individuals within it).
Where A|R is quite right is that no-one, but no-one, can tell him or me how to grieve and what is an appropriate display of said grief. The condolence thread is not a work of art that is there to please all who see it. It is a place where people can place their personal message to the departed. In most cases the family will be utterly unaware of the thread and therefore, whether they are the "target" of the message or not they will, most probably, never see it.
Moggiiie:
I agree with your feelings about what is put in the threads. I too question whether the Britain I once knew has disappeared forever as a result of some of the displays. But your/our job is not to read the individual posts and judge them. It is to pay our respects in a way we feel appropriate and leave.
So... I agree... That I agree... but I disagree... If that makes sense... It does to me...