You are right to be lol, it might be like Twitter. Currently what is not working on Twitter:
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DMs
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search
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following feed
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basic app stability
People are only just now realizing they need to switch. Sigh. I still have all these features since I get my friends' posts through RSS. I see them complaining about not seeing each other. Same could happen with Letterboxd. Also other guy pointed out we have NeoDB to usher them into so it's worth a shot