I know this show exists for the sake of explaining rarely-understood or little-known topics, but outside of Bob's own enjoyment of Family Guy I'm not sure how any of this is relevant to anything. Characters die all the time in every form of story-telling media you can think of. Doctor Who swaps out its main character actor every couple of years and each one of them has gone through handfuls of supporting characters, some of whom have remained famous and ubiquitous with the series as a whole despite only being around for a year or two.
Now if Family Guy had taken the bold step of offing Peter Griffin, a character who has come to more or less exemplify everything I find annoying with the animated sitcom, being an abusive, neglectful, pants-crappingly stupid bull in a china shop who we're expected to somehow relate to and cheer for while he's treating his wife, children and basically everyone around him like shit and not being called to account for it, I might care enough to keep an eye on this. As it is, I just don't care.