Apple confirmed there is absolutely no intention of dropping it. It's coming in spring. I think Apple got already way too lenient in deciding to give developers almost a year-long grace period since the announcement at WWDC 2020.
They’re pretty determined, with March being the best rumored rollout so far. Delays are around SKAdNetwork, as the change destroys traditional attribution and alters how ads are run. They gave networks and publishers more time to adapt, but there won’t be any more delays
Antitrust risk could be a factor, as the preferred treatment of ASA seems dubious - but the change seems to be coming regardless