Lucas Shaw, writing at Bloomberg:

This data is backed up by conversations I’ve had with people who work at Netflix, who’ve said since last year that the first and second quarter of 2021 would be most affected by Covid. Netflix shoots most of its TV shows and movies several months before it plans to release them, which you have to do when you are dropping every episode all at once. As a result, it had shot most of its 2020 material. But we’re now a year into the pandemic, which means we’re seeing the effects of production stoppages from last March. April and May.

This is not unique to Netflix. If anything, Netflix is still in a stronger position than most of it competition.