The "uncluttering" excuse wears even thinner when you realize that there's no way to tell a platform: "This isn't clutter, show it to me *every* time." Think of how the cartel of giant email providers uses the excuse of spam to block mailing lists and newsletters that their users have *explicitly* signed up for.
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Those users can fish those messages out of their spam folders, they can add the senders to their address books, they can write an email rule that says, "If sender is X, then mark message as 'not spam'" and the messages *still* go to spam:
https://doctorow.medium.com/dead-letters-73924aa19f9d
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