I’m no expert on TV viewing metrics, but this:

“Figures provided by TVNZ show the premiere episode of NZ’s Best Homes with Phil Spencer had an average audience of 490,000 – almost half a million people. Notably, that was more than the 473,900 who tuned into the final episode of Sunday last month” (This Spinoff)

sounds to me like the people who are watching linear TV on a Sunday night don’t care what’s on, they’re just watching at that time.

It also boggles my mind that about a tenth of NZ are still watching linear TV.