The value of the USD still erodes even amidst the many technology advances since then.
But the Oil Embargos hit the US twice in the 70s, during that period inflation spiked and only settled down when the price of Oil stabilized. USD had adjusted to the new prices.
Then in the last 20 years, a few times we had some relativity minor shocks due to OPEC decreasing production among other things. Thus inflation.
People like to point to other things, but to me, our economy is directly tied to the price if energy. And maybe that is why trying to get off of fossil fuels seems almost impossible.
And not counting the price of Energy in our inflation numbers skews our real issues.
https://russellinvestments.com/us/blog/inflation-pales-to-19...
https://www.epbmacroresearch.com/blog/initial-conditions-for...