Of course, one of the reasons why these videos are so long, is that the YouTube monetization system encourages people to write like they are trying to reach the required word count for a school essay.
I don't think after 30m or so it makes much of a difference as far as the YouTube algorithm is concerned.
I haven't watched PatricianTV's more recent videos since the games he has covered aren't of interest to me (aside from Starfield but i want to play it first myself before watching anything about it) but i did watch his Morrowind, Oblivion and Skyrim videos and IMO while a few things here and there could be shortened, the difference wouldn't be that big because the videos try to cover everything, from story, to mechanics to the game's development history and try to do this in a way that shows in practice (in the video itself) how things are affected - and where appropriate also show how doing things differently affects things too (he made multiple playthroughs with different characters doing different things).
I have watched shorter videos by other people and they always leave a lot of things out and/or are vague whereas Patrician tries to cover most things and do it in detail. At the end of the day these aren't reviews (the titles are just for clickbaity engagement, if it wasn't already obvious), these are analysis videos and the games have a lot of things to discuss/show in them.