You are moving goalposts. Inflation is not problematic because it is mathematically fixed at a known predictable rate. Price is baked in.
Number of Bitcoins today = 13'646'425
Number of Bitcoin 365 days ago = 12'177'500
Inflation = (13'646'425 - 12'177'500) / 13'646'425 = 10.76%
Price of 1 BTC today = 324 USD
Price of 1 BTC 365 days ago = 734 USD
Aye, the price is indeed baked in.
Right and PoS always goes up in price, right? Notice that the average yearly price goes up substantially every year.
The value of a coin that is inflating at 10% is pushed down 10% per year against a coin who has 0% inflation, this is done by speculators.
In reality some years the inflationary coin will go down 30% some other years it might gain 10%, but on average the 10% yearly inflated coin will always go down 10% per year against a coin who has no inflation.
In the short term everything can happen but in the long term you might find yourself working hard just to keep up with inflation if all your holdings are in a 10% inflationary coin.
And please don't tell me bitcoin inflation is temporary and it will go to 0, no POW will ever work with 0% inflation.