Is BetterCampus (prev. BetterCanvas) safe?

BetterCampus is a legitimate Canvas LMS enhancement extension with 2M users. It uses broad host permissions consistent with its Canvas integration functionality, and includes opt-in PostHog analytics, Google/Outlook calendar integrations, and a Supabase backend for user accounts. The Google Calendar OAuth refresh token is proxied through the developer's backend server, which is a notable but common architectural pattern.