They have very little credibility currently because of past miscues beginning in 2018. The fed has to talk tough because if they were to say “we probably aren’t going to hike much more” markets would likely rebound, easing liquidity and making their job of reducing inflation harder if not impossible.
The problem is that it seems the bond market sees through this and isn’t buying the tough talk. I think most people believe the fed and buy into the popular narrative that taking rates from zero to 4.5% will decimate the economy (even though 4% is actually very normal historically and anything under 4 was considered quite low).
Watch what happens with fed policy if CPI comes in well beneath expectations next Thursday.