Which is why Bitcoin in hyper-deflationary, which is a insane economic policy for any serious fiat currency
Most modern economists would agree with you. There is no correct answer here, it's mainly a matter of perspective and what you value. I would say it's mildly deflationary, the supply is fixed, it's not like 10% of the supply is burned every year or anything. We used to have the gold standard, that was essentially based on a fixed supply, the world didn't collapse, it was fine. We moved away from it for good reasons although if you asked the other countries who participated in that system about how the US went about making that transition it was of course quite contentious at the time. They trusted their national currencies to be pegged to the dollar which was pegged to gold until one day the US just said "Hey jk not anymore good luck". I'm not going to get into the weeds arguing inflationary/deflationary economics with you I was mainly just trying to correct what seems to be your misunderstanding about how Bitcoin and Eth actually work when it comes to forks etc.
Are you starting to see how this is still political?
I'm not making the argument that economic systems are divorced from politics or don't have political or social implications. They obviously do.
That policy can be changed in code by programmers just like lawmakers can change economic policy for national fiats.
Sorry but you're just wrong about the rollback and how that works. The only reason the rollback worked is because the majority of the ethereum network nodes and miners agreed it was needed. Releasing code in an of itself does nothing, you need network consensus for it to work. If legislators write a law, that changes the fiscal policy immediately. If the Eth programmers write a protocol change into the code nothing happens until there is widespread enough consensus for the network to upgrade to that new code and fork. They have to convince the entire network to download and run that new code. This would be equivalent to having to get the entire country to vote on a new fiscal policy every time congress or the federal reserve proposed changes to it. It is wildly more democratic.
Whatever group controls the most wealth controls the chain
A. Pretty much how our existing economy works. B. Nodes and miners control the chain (or in Eth's case nodes, validators, and the people who stake their coins to those validators which is literally everyone who has Eth can do). They can directly vote on proposed rule changes unlike in a representative democracy where they elect people who can change those rules and in most cases the only recourse if they make bad rules is to elect somebody different next time. In Bitcoin or Ethereum you need widespread consensus among those who use the network to effect protocol changes. There have been many proposals to change Bitcoin's core protocol over the years, most of them did not succeed as they required widespread consensus which is hard to get and takes significant time. So it produces a very stable protocol (and fiscal policy) which tends to be backwards compatible.