I understand that my huge wall of text posts are intimidating... but if you can't take the time to read them then I really don't know how to argue the standpoint.
If it is a redenomination of gil NO ONE SUFFERS. The only downside is the effect of looking at your gil and what used to be 7 digits is now 6. It would be like if you kept all of your money in dollar bills under your bed. Then one day you decided to convert all those dollar bills into ten dollar bills. You'd have exactly the same amount of money, you'd just have far fewer actual pieces of paper under your bed.
If this is an actual, thorough redenomination then it's not just your gil that gets condensed, things that you used to be able to vendor for 400 now will vendor for 40, things that used to cost 12000 at the vendor now will cost 1200. Theoretically this change would transfer to the market wards as well. A 75,000gil cobalt winglet becomes a 7500 gil cobalt winglet. the VALUE of items would not shift, just the denomination of gil required to purchase it.
Arguably this is a change that doesn't need to be made, since the only thing it is doing is making the numbers everyone uses smaller. Though in the long run it will allow the overall economy to start in a better place in 2.0.
One would hope that this change is also tied to a complete overhaul in how gil is obtained and introduced into the economy in 2.0 (because frankly, gil is stupid easy to get right now.)
If money is less easy to introduce into the economy from thin air (via vendoring garbage) then prices for items will fluctuate less based on the amount of gil in the game and more on the supply and demand for a given item.
THIS IS A GOOD THING.
If all they are doing is lowering the maximum amount of gil a single person can hold then nothing changes, it fixes nothing, and it's a huge waste of time and energy.
Frankly, the only thing I can say at this point, is if you think that JUST lowering the cap is preferable to redenomination then you just aren't understanding what either option accomplishes.