Sounds like he's referring to cards he has duplicates of. If I have 25 of Card #1 Of any set, it uses 25 lines, rather than having a 25 beside the card number. Which in turn pushes cards 227-250 to page 2. This is what he seems to dislike if I'm reading it right. This has never bothered me, but I could see where it might bother someone. If you have a lot of one card, you can't glance at the screen and tell how many you have. You have to count the lines. I can live with it, and I've never noticed anyone else bring it up. But I can see his point of view.
I'm going to reevaluate how I collect after the new year. It's just getting way too expensive for the new stuff. Sometimes I just want to buy a pack, not a whole box or even blaster.