I signed also, but one of the reasons why we didn't get out 4tph back is because since Southern scrapped the old Class 455 units last year, there simply isn't enough rolling stock to operate the full service they used to pre-Covid.
As we have the Overground, we're no longer a high priority for Southern with Penge West and Anerley losing all but three trains a day with none on Sundays.
I would say that since the Elizabeth line opened, Whitechapel is a much easier station to change trains than Canada Water. It's useless if you work at Canary Wharf or London Bridge/Waterloo, but if you're going into the West End or Stratford, it's a much easier commute.