$2 trillion stimulus to a locked-down economy - will it be inflationary?

Unlike any other recession I know of, reduced production is the goal. The goal of the stimulus (and I like disaster relief instead of stimulus) is to keep companies employing people, even with no work, and to keep people eating and out of bankruptcy or foreclosure. The demand and production will return by themselves when the crisis is over.
It is more like WW II, where decreased production of consumer goods was a war goal, thought there, because we had full employment, they had to use rationing to do it.

The previous stimulus targeted the big banks and the inflation stayed in asset markets. This stimulus is directed toward Main Street. Look for a return to consumer inflation.

This is very true. The term “inflation” originally meant money creation, not its consequences.