I'll try again.
FSG are using the ticket revenues and are robbing Peter to pay Paul (and picking Paul's pocket at the same time too) - they are moving ticket revenue around among the matchgoers while at the same time (on a like for like basis as £40m of extra new revenue hoves into view) they are going to make even more out of tickets. More - not the equivalent of this year on a like for like basis, more over and above what they can expect from having more seats.
What the supporters' groups are saying is that the Club's overall revenue should be used to reduce the income produced from ticket sales making tickets cheaper. Not just using the ticket revenue and moving it around.
Why mention 70% then? You keep ignoring it but there's no reason to mention it if you didn't mean the other 30% should be charged a different price.
If FSG stick to their original strategy then everyone wins - the club makes bigger profits so we can spend more on players, the working class man isn't priced out, local youth get in cheaply, and those who are prepared to pay a premium do so. All groups interests are covered, I can't understand the opposition to that idea. The club needs to make money, local youth need the chance to go, the everyday punter deserves to watch the team he loves. Their idea allows all that (assuming they stick to their original idea, which I hope they do)
It's pie in the sky stuff to demand that the club purposefully loses money (and therefore competitiveness) or that 30% of match going fans should be rinsed to cover the other 70%.