Is Fiscal Policy a lot better than the Feds monetary policies?

The Feds have kept interest rates really low in hopes to pump money and stimulate the economy. They hoped people would borrow money cheaply and go on a spending spree. Historical low mortgage rates and auto loans do sound attractive but that's not enough to boost consumption. Instead cheap borrowing only created asset bubbles. If consumption needed a boost, wouldn't a tax cut be a better approach since every individual tax payer would have more disposable income than they did before and could lead to more spending?

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