Quote:They're only mentioned when they're relevant to the story. Every line of dialogue is valuable when you only have 20 pages an issue.
Well, "relevant to the story" is in the eye of the beholder.
For instance, one might say that before the idiotic 2009 retcon which brought him back to life, Bennett Brant's death would have been relevant in any situation where bystanders were in danger of being killed in the crossfire, since Bennett was the first supporting character to be killed that way in Spider-Man's crimefighting career.
I personally found it a bit odd that when Peter interacts with Betty the fact that her brother was violently killed and that her husband was murdered did not come up more often. With Ned it even seemed deliberate to me, because they also made Betty revert back to calling herself by her maiden name and the Foreigner, the pretty interesting villain directly responsible for Ned's death, practically never appeared again and was hardly ever alluded to. Ned's death also should be relevant in Peter's dealings with the Black Cat, but it is understandable that writers using her don't want to bring up the fact that she was in cahoots and in bed with the Foreigner at the time of Ned's murder.
In the case of Ben Reilly and baby May it is also glaringly obvious that Marvel deliberately decided that they would not be mentioned even in situations when they were relevant. One of the best examples was when Luke Cage and Jessica Jones had their baby and Peter and MJ did not react with "we could have had this if our daughter had not been stillborn" but more on the lines of "this makes us briefly (and apparently for the first time) wonder whether we should have children of our own".
Strictly applying your logic one may ask if e. g. "Spider-Man: Blue" or "I Remember Gwen" should even exist. Their one and only purpose was to show Peter and Mary Jane reminiscing about Gwen and her demise.
At least from the stories that I read. That should have formed the animosity between him and Macendale, but he never really brought it up when the two of them encountered, and or fought one another.