There is 90 toons needed in each zone for ROTE, with duplicates, that is enough for all members to get it done in P1 alone.
Geos, I think there is 60 toons needed in each zone, still enough for all members to do it.
I understand a 4m account vs a 11m account has a harder time with platoons, but that's the point. They should also struggle to achieve lvl 50 of the quest line. Why should a 4m get the same rewards as the 11m without serious focus? They reward tenor and growing rosters.
If you already pay, why not buy the pass and benefit from those rewards? They make up the difference from not getting high in the quest line.
They are not making the game harder, this is an optional part of the game. No one is forcing you to do it. You can still advance in the game by ignoring the quests.