Mourning the dead is one of the topics where JWs fall into the "protest too much" camp, IMO. I recall frequent talks and WT studies that went out of their way to say that we shouldn't feel guilty for mourning/crying about a dead loved one regardless of our faith in the resurrection. Why would anyone feel guilty about mourning? It's an absurd thought. Even with the resurrection you have to be without a loved one for what's likely to be many years and that can be difficult even if they're still alive, so of course you're going to be sad when someone dies. Then add in having to go through their effects and dredge up old memories....it's just insane to think that you ought to feel guilty about mourning or feeling some sadness. So why do they spend so much time on it? I think they want to put the thought into you.
Those articles always say it's ok to grieve, but then go on to give examples of how people were able to be comforted by the resurrection hope. I think they present the idea of feeling guilty about grieving and then they basically say that you should be happy anyway (and indeed happier than worldly people because you'll see your loved ones "soon" instead of waiting to die and go to heaven) and when people aren't happy they inevitably feel guilty.
They'll also say things about not judging others who mourn a loss for too long or something - again this is such a strange thought to come from a vacuum - it's not a common thing for people to judge others for mourning a loss...it's one of the most relatable human experiences. Again I think they're trying to put the thought in the head of the R/F JW. So many times when they say don't judge they follow up with instructions to judge others - they'll say don't judge others for their choice about higher education and then later in the article they'll say to be on guard for bad association even within the cult - how can you determine if someone is bad association without making some judgement?
So much of the doctrine and advice around mourning the death of a loved one follows classic cult strategy - create a problem that wouldn't otherwise exist and then present the cult as the solution. JWs are prevented from properly mourning by being told that they'll see their loved ones "soon" and by being told to imagine seeing them in paradise which will come the day after tomorrow - they're forced to keep the loss in mind in a way that would almost make them feel guilty for moving on because if they move on and then paradise comes tomorrow just think of how bad they'd feel when they see their lost ones. They're left feeling guilty if they grieve, guilty if they move on and then given constant reminders of the loss. Then when they have a hard time with it all, they're told to do more study and more recruiting.