Academy members have many perks. They can vote for nominees in their branches and vote for Best Picture. Members also have exclusive access to the screening of nominated films. If a member resigns from the Academy he loses all those perks.
Voting members are removed from the Academy if they leave it voluntarily.
They are still eligible to be nominated and invited to Academy ceremonies in the future.
Although few Academy members have resigned, the action is not completely unfounded.
Three members have resigned from their memberships in 2022: Tom Fleischman (a sound engineer) left at the beginning of March. Peter Kurland, a sound mixer, followed his lead and left two weeks later. Will Smith, a famed actor, quit after he slapped Chris Rock at the 94th Annual Academy Awards ceremony.