Seeing as Bitcoin was created as a deflationary money system, it is a very good investment against fiat inflation, I would say. However that can also go both ways. So if for some reason, the US government decided to start "burning" dollars as to increase the buying power of each dollar, then by contrast, this would drive the price of Bitcoin down and could also push people invested in bitcoin into a panic sell.
But I doubt that will happen.
Government won't burn dollars. They can print their fiats from thin air and do give-away events to their citizens but they won't officially operate and announce any burn events as deflationary mechanism. They can burn damaged or unusable fiats but it is not burn for deflation. They will mint more new fiats to replace it later.
Bitcoin is deflationary by design which can not be changed by a single person. Changes are possible but only if the Bitcoin community can reach to a consensus for big changes in protocol. I think the community will never vote to change Bitcoin from deflationary to inflationary. If dollars go down in purchasing power more and more significantly, more people will recognize this painful fact, and Bitcoin will be their choice to be survived and get rich.
Purchasing Power of the U.S. Dollar Over Time