You seem to be in denial about what your own government has the power to do. As someone who is recently frequently in denial about the bad things his government is doing, I empathize.
The law passed in 2016, and an amendment passed last year.
Apple spoke out against it at the time. UK government spokespeople have
spoken out against end-to-end encryption. The law allows the government to do this without telling anyone, and makes it a crime for Apple to tell anyone the request happened.
Why on earth would the journalists Washington Post risk its sterling reputation to make up a story like this? Why would US national security officials confirm it? If it didn’t happen, why isn’t Apple saying it didn’t happen? Why is the UK’s response be “we won’t confirm or deny” vs. “that’s ridiculous, we don’t have the power to do that”?