Yes, it appears The Sun is returning to its old ways.
Post-Leveson, it became hard for The Sun to do its usual kiss and tell, which was usually a means of getting soft-core pornography into its publication. Along with jettisoning Page 3, it made the paper a tad more respectable so its journalists are guests on the Press Preview, along with those of the Mirror, whereas before I'm not at all sure it would have been acceptable.
But The Sun without its tittle tattle exposes is like a dog that can't bark.
The Covid lockdown allowed them to resume their old ways because they could hang illicit sexual activity on a public interest issue, that it was illegal. Hence the Matt Hancock thing, it allowed them to control the narrative and exert power - namely bring about a resignation.
Another benefit, as was surely the case with Caroline Flack, was/is the corrupt association between The Sun and the corrupt Met Police. Quite simply, they would go after a celebrity because they could ensure front-page scoops, in return either the Met or the CPS would most likely get furnished with shedloads of cash to pay off a few mortgages. It's a massive racket.
In the case of Caroline Flack, it seems it led to her suicide, so it's on them.
Might still do, with their latest conquest. But nobody will be held to account, it's too big.
Corrupt links between the Met and the press would have been covered in Leveson 2 but that has been successfully shut down, even Private Eye were against it. Any politician who advances that will be gone after, either them or their associates.