Why can't Miles Morales join Spider Society in Spider-Man: Across the Spider -Verse?

Why can't Miles Morales join Spider Society in Spider-Man: Across the Spider-Verse? There will be major spoilers for the film ahead.

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Collects Amazing Spider-Man (1963) #143-164, Amazing Spider-Man Annual (1964) #10, material from Marvel Special Edition Treasury (1975) #1. Peter

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After 10 years since his debut, why is the Prowler still the only original villain of Miles'? Agent Venom's been around for much less but has his own Sinister Six : r/Spiderman

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