Don't agree with it whatsoever, can't see it making much difference though apart from those who have ST in those seats. never understand why anyone would sit so low though. Being able to see the game is best.
Just go onto the OS and click onto buying a ticket for the Real Betis game and select 'choose your own seat', then the seating layout comes up. It looks like its 40 or so of the seats between A50 to A160.