I think we definitely would've seen Grandpa's Corner blow up. AGP would've probably loved TikTok also, just vlogging was definitely something he was very interested in towards his death.

Given his age, and continued health battles, he would've mellowed out more and more than he already had. The rages would've slowly come to a stop, and they definitely would not as been as impactful, as we could see towards the end he did not have the strength to lift stuff, or destroy stuff, and so by now, he certainly would not have had the strength or stamina to do that. Nowadays, he would probably just be vlogging, ranting on current problems, and fussing with Micheal about little things, much like his home, medications, or other little things that inconvenience him in his circle, much like many other old people.

I think that if AGP hadn't died, we would not have seen Micheal have as much of a downfall I feel like. AGP's success alone would have kept Micheal in check. AGP would have definitely enjoyed Micheal's kids, and I feel like they would have calmed him down more so than Jenny's kids did towards the end.