Reducing money supply will reduce the amount of money available to spend on oil, gas, and fertilizer, thus reducing the demand of those things to match the lowered supply.
People and businesses need to buy gas and oil. It is not discretionary spending. They also need to buy food, and food prices are not higher because of the money supply, nor because people are buying more food, they are higher because oil prices are higher.
Also, all that lowered spending you cited will mean closed businesses and economic collapse. Say goodbye to AI as well.
You cannot control inflation caused by a supply shock by rising interest rates.
Not all of it is non-discretionary - as in people die or get hurt if it doesn't happen. Definitely not in developed countries. I've already described what "bare minimum" use looks like, and rich countries are nowhere near that.
> Also, all that lowered spending you cited will mean closed businesses and economic collapse
That is correct. It does, however, "fix" inflation. When more people are poorer, they have less money to spend.
> You cannot control inflation caused by a supply shock by rising interest rates.
Supply shocks can always be dealt with by destroying demand. This may result in a degraded quality of life. But it will fix inflation.