When it starts to get really burdensome to keep your promises, the idea of breaking them gets really attractive. But that doesn't come for free. It costs credibility. The cost of central banks breaking their inflation-control commitment when inflation starts running hot, is that the market starts pricing in their unwillingness to raise interest rates. This fuels a whole bunch of other inflation feedback loops, and th…
I'm pretty sure that's been priced in for quite a while now, really. Interest rates have rarely gone up by much over the last 30 or so years, and for most of the last 20 they've been as close to 0 as they can go and still be called "interest".
Honestly, the big problem with this article is it acts like interest rates haven't already been abandoned as a tool of monetary control, and for a long time.
The way they 'control' it now is by using a kind of stimulus that keeps the markets from crashing without really adding much most people's income or spending. They just give it right to the finance industry and let it slosh around the market until the next crisis.
COVID's big variation on this is that some of that money went directly to people instead of businesses or the stock market, and it both caused some inflation and also kicked employers' asses into actually paying people enough to live on.