While she did post it, she presented it as "Some Wise Advice Circulating", suggesting that it's most likely something she saw and agreed with rather than advice from her. I think she removed her original post, but she later reposted a slightly modified version. If you're OK with visiting Facebook, here is the link.

Notably, Bernice changed rule 1 in her modified version:

Use his name sparingly so as not to detract from the issues. I believe that everyone, regardless of their beliefs, deserves the dignity of being called by their name. However, this is a strategic tactic. While we are so focused on him we are prone to neglect the questionable policies that threaten freedom, justice and fairness advanced by the administration.

The version in OP has the original rule 1.

[–] LastYearsIrritant@sopuli.xyz 14 points 2 days ago

So you're saying, follow rule 8.

Also, on first read, I thought it was saying Coretta Scott King posted this, but it says the daughter of MLK and CSK, and never used Bernice's name.

It's a bad, misleading screenshot that doesn't follow its own advice. It should be rewritten to be more accurate.