Quality signals, violations, and account health vs the ‘shadowban’ narrative.
What to do
A reach decline is an observation, not proof of a hidden penalty. Check account status, eligibility, content differences and audience changes before blaming a tag or one post.
Practical example
A team notices its comparison involved a creator collaboration and an ordinary product announcement with different distribution.
Check your result
Use available official status and review tools rather than paying for promises to remove an unverified restriction.