The UK press was positively hagiographic about Meghan and her marriage to Harry until she and he started accusing them of racism. That went down like a bucket of cold sick, because it wasn't true.
Then they preached that hoi polloi should stop flying to save the planet, before promptly hopping on Elton John's private jet to go on holibobs. THAT was the moment that it turned.
The British press knew things about Meghan that the Palace also knew and asked them to keep to themselves, which they obediently did. But when, in journalists' minds, she failed to uphold her end of the bargain by painting them as little better than quislings writing for the Voelkischer Beobachter, they quite reasonably decided the gloves were off. They weren't going to spill the stuff they'd discovered about her behaviour towards Royal staff, or in the run up to the engagement announcement, because the Palace had asked them not to. But they weren't going to treat her with kid gloves anymore either.
Same with Harry. The media obediently spiked the many stories about his, shall we say, less than Royal behaviour over the years, and went with the carefully crated cheeky chappy image the Palace demanded. But now that he's been drgaging them through the courts, they're understandably less keen to toe the line, and since he's not a proper royal anymore, they don't have to fear losing access.
Sure they'll keep Liz Jones and Bryony on the payroll to write the odd sympathetic piece, just in case he has any British fans left. other than that, though, that particular ship has sailed.