Rhetorical question? Indeed. Do high input costs lead to inflation?
Of course they do. If Oil price is high, energy bills are high, everybody pays for that.
Then, whatever they produce or manufacture, or the work they do whilst sitting under a light, for that they have to charge more.
A point comes where people don't want to pay more. Food products are abandoned by farmers after sitting a long day and finding few buyers.
Recently, vegetables were quite expensive. Then, a point came where people started to cut down on cooking essentials like onions. The price started to drop. Farmers were jettisonning bag loads on the streets of India. In London, you could see a bag of onions drop from £2 to 50p! Coriander which was 90p a bunch was now 5 for £1!
This was something similar to stories I had heard about the 1920s, where farmers stopped growing food because people were not willing to buy it. In turn, the farmers couldn't pay rent on their dwellings, and landlords started to find it a waste of time.
If Oil is expensive, or interest rates are high, then those input costs will result in high output costs on things produced or manufactured or services provided, there is no doubt.
A saner plan is to have lower Oil prices, lower interest rates, and strangely a higher standard of living comes about for all, even the poorest. I dread to think of the times in October 2008, when building projects were being cancelled in Dubai due to Oil price reversal. It should not be so high in the first place. I hope the OPEC nations will kindly pay heed to this reasoning and consider lowering the Oil price in a wider humanitarian sense as well as a self-preservation mechanism for their own economies. For that I pray.