Answer: the economy is bigger than just the money printer. If the overall economy is suffering, then you can still have deflation even if the money printer is going.
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Can you point to a period after 2008 when inflation finally happened? Answer: not until 2020+, after COVID19. Well past the era of your earlier example.
And sure, COVID19 and other issues will not be fully figured out until a decade from now. Your assumptions that money printing causes inflation are very one-sided and ignores greater situations that happen in the economy. There's more to economics than just monetary supply.