Not about Peacock per se, but about streaming in general. As the tweet says, Amazon has acquired a share in Diamond Sports Group for $115 million, pending US Bankruptcy Court approval, which shows regional sports (NBA/NHL/MLB) in 37 states under the label Bally Sports. Amazon will be a host for the games on Prime Video. Amazon will now have a presence in all four major US sports.
[paywalled:]
https://www.espn.com/espn/story/_/id/39327963/amazon-invest-diamond-sports-part-bankruptcy-deal
"Amazon will partner with Diamond Sports as part of a restructuring agreement as the largest owner of regional sports networks looks to emerge from bankruptcy.
Diamond owns 18 networks under the Bally Sports banner. Those networks have the rights to 37 professional teams: 11 MLB, 15 NBA and 11 NHL.
Diamond Sports has been in Chapter 11 bankruptcy proceedings in the Southern District of Texas since it filed for protection last March. The company said in a late 2021 financial filing that it had debt of $8.67 billion.
[...]
Amazon Prime already carries some New York Yankees and Brooklyn Nets games produced by the YES Network."