I honestly don't get this attitude. If you want short, poppy rock songs, there's a place for that. I don't know where that place is, but I don't think it's on a modern Iron Maiden album, a band that has been trending towards "longer" and "even longer" for the last 20 years. Maybe what you're saying is that inside many long good songs are good short songs, but to me, it sounds like, "I miss the days of Iron Maiden making shorter songs because reasons and I want those days back."
It's not that I blame anyone for being nostalgic for the past or whatever, I just...the past is still there. It's on CD, vinyl, and for some, cassette tape.