It was inflationary but would spread out the pain over the recovery period after the crisis, the other option was to allow 100% of the pain to be felt immediately: economy shutting down, people losing their jobs, diminished household spending, less money circulating in the economy, businesses still running having fewer orders/customers, more people being laid off, all the way until the crisis passed.

Between the latter and the former I believe the former was a much smarter choice in the medium to long term.