Disclosure: I haven't used BeReal.

I fully expect BeReal's model to change in less than two years from now (probably within a year). I see it quickly devolving into tedium after a while. Users will disable notifications to post, become passive consumers. "Influencers" drive adoption of platforms and it's hard to be the same type of influencer unless you're constantly living that lifestyle, which almost no influencer today actually does.

This is true. Majority of influencers lean on a back catalogue of material, and remix it to maintain the pretext that they're living that lifestyle constantly. Even for people that could afford to live that life, it's exhausting to be switched on and shooting/editing material at all times.