I don't like their last three albums very much, and I thought Accelerate was very mediocre. I don't see what all the hype was about there, tbh. But there are 2 or 3 songs on each of those albums that I think are really good. I don't care if a band continues making mediocre albums, because I am always interested in hearing the good songs that come out of it. But when a band stops writing altogether, then you don't even have those good songs.
I think a person's desire to see one of their favorite bands quit while they are still popular and getting good reviews is partly due to sentimentality; they feel that mediocre albums will somehow tarnish or taint the band and their memories of them. Another reason might be "I just don't want more crappy music out there hitting my ear drums." But of course you can simply choose to not listen to it, so I don't see it as a valid reason. Don't get me wrong; I can understand how a person wouldn't want to see a band they've respected so much start to put out mostly mediocre music on a few albums in a row, but now there's nothing, which is why I think an occasional EP would be nice.