I don’t think that tells us anything. We already know 7% > than 4.2. This should already be a fact that inflation was worse during Covid.
I don’t think know that inflation was worse in the 70s helps fixes the narrative that 4.2% inflation is not good.
Obviously more inflation is bad almost always. The question is how bad. By looking at a graph, you can get a sense for the mean and standard deviation of inflation over time, and this looks to be a small deviation in the grand scheme of things. Of course, no one would call this good, but it's just good to put stuff like this in context.