Evidence shows that Mayor Eric Adams did, in fact, lift the key COVID-19 vaccine restrictions affecting attending and playing in NBA games during the 2021–2022 NBA season.

• Proof-of-vaccination for fans (attending games): New York City’s “Key to NYC” program, which required patrons to show proof of vaccination for indoor entertainment venues (including arenas like Madison Square Garden and Barclays Center), was allowed to expire at 12:01 a.m. on March 7, 2022, under Emergency Executive Order 50, meaning the city no longer required fans to show vaccine proof to attend such events, though venues could still choose their own rules. (nyc.gov)
• Restriction on players (playing in games): On March 24, 2022, Adams announced a carve‑out from the city’s private‑sector vaccine mandate for New York City–based professional athletes and performers, explicitly lifting the rule that had barred unvaccinated home players (like the Brooklyn Nets’ Kyrie Irving) from playing in city venues. News reports at the time describe this as a partial lifting of the vaccine mandate that had kept some top athletes from playing in New York City. (cnbc.com)
• Within the 2021–2022 NBA season: The 2021–22 NBA season ran from October 19, 2021, to June 16, 2022 (including the Finals), so both March 7 and March 24, 2022, fall well within that season. (en.wikipedia.org)

Since Adams lifted (and in the case of players, explicitly carved out) the relevant vaccine restrictions for both attending and playing in NBA games during the 2021–2022 season, Chamath’s prediction that “Eric Adams is going to lift the vaccine restrictions” — in the context of those basketball-related mandates — came true. The fact that other vaccine requirements for some workers remained in place does not contradict the specific, basketball-focused prediction.