because if you're referring to requiring review approvals before a PR can be merged, that's available in the free plan (under branch protection rules).
A feature that's available for free on public repos isn't necessarily free for private repos, it seems. The wording on the pricing page isn't very clear about this, though.
If they mean that they're now removing required reviewers for public repos in the free plan, that's definitely a big step backward I think.
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