Snipping pertinent points, it says:
"The Board has decided, for a period of 10 years from April 8, 2022, Mr. Smith shall not be permitted to attend any Academy events or programs, in person or virtually, including but not limited to the Academy Awards. [. . .]
"The organization didn’t have too many other options to impose, especially with Smith’s membership now no longer active following his resignation. His resignation and barring from future telecasts do not preclude him from being nominated or even winning future Academy Awards during that time. "
So, he can still win. Just not do another slap. . . then acceptance speech. He can probably say something on Instagram Live after the announcement and wait for an assistant to pick up and hand him his award after the show. Then go party hopping again.