I have read about that too and know that there is quite a big debate about inflation. I still think that modern economic systems are sufficiently complex that there is no one person or government on the planet smart enough to allocate printed money in a way that is always 100% efficient - some amount of dilution is absolutely going to occur when you just will a couple trillion dollars into existence and inject it into the economy. Hopefully the value is greater than the dilution, but its not always going to work that way - this is what a well balanced portfolio will counter.

One can argue money printing has really worked out for the US so far...