Ultimately, its underperformance may be the result of a greater sea-change happening in the entertainment landscape. Marvel Studios is not the brand it once was from a mass appeal perspective, and people are simply not seeking the MCU out like they once did.
Just look at what is happening with the recently released Thunderbolts* film. The Florence Pugh-led MCU epic earned glowing reviews, fans have loved it in theaters, and it still has had a relatively slow burn at the box office.
There is a chance Marvel Studios can win those lapsed fans back with big-name titles like Fantastic Four and Avengers: Doomsday on the horizon, but this may also be the start of a cooling trend surrounding the trend.
Because of this, fans should not expect Born Again to be the last time an MCU streaming show does not hit the Nielsen Top 10 like this (especially with lesser-known names like Ironheart and Wonderman being the focus of its next two live-action streaming series).