There's one key mistake you're making in your assessment. That stimulus is not "spent-and-gone." That money continues to stay in circulation. You can see a graph of the monetary supply here [1]. And you can observe that inflation only started to get reigned in once the monetary supply started to decline. This is why many individuals tend to be against 'printing' money. It's not like people get a boost and things then go back to what they were before, but rather you now have trillions of more dollars floating about in the economy which will tend to drive prices up.
I'd also encourage you to look at the financials reports from most companies. If your profits increase by 5% at the same time inflation increases by 8% then you're both (1) getting absolutely economically wrecked, and (2) reporting 'record profits.' As companies are motivated to frame their earnings as positively as possible, this can be misleading to people who take those reports at face value.
[1] - https://fred.stlouisfed.org/series/M2SL