It means nothing. Ask Archbishop LeFebvre.
harveymillican.com

What Does It Mean to be Excommunicated Anyway?

When they won’t excommunicate Biden or Pelosi? When they tell you that it’s OK to be a good [insert non-Catholic sect here]? When Vigano’s own defense …
Alejandrina Reyes
Holy Face Devotion yo combat revolucionary men:
League of St. Martin
la verdad prevalece
Bergoglio has not excommunicated any of his convicted homosexual predator protégés When was Grassi excommunicated? When was Zanchetta excommunicated?
True Mass
Mr. It's an act of love, excommunicates AB Vigano? Pathetic.
philosopher
Pope Alexander II threatened Marozia his Vatican mistress with excommunication if she left him. She stayed and their son later became pope. If Julius had excommunicated her, spiritually it would have meant nothing because it would have been unjust, but on a temporal secular level it would have caused her a lot social problems.
My guess is that this is over Vigano's accusations that the Pope sexually …More
Pope Alexander II threatened Marozia his Vatican mistress with excommunication if she left him. She stayed and their son later became pope. If Julius had excommunicated her, spiritually it would have meant nothing because it would have been unjust, but on a temporal secular level it would have caused her a lot social problems.

My guess is that this is over Vigano's accusations that the Pope sexually abused seminarians when he was a bishop in Argentina. Even that was too much for Francis. Even though I don't like Pope Francis, I don't at all believe that those accusations were credible. Vigano could not provide any shred of evidence, only hearsay and gossip.
Everyday for Life Canada
It’s the perfect example of projection. The schism is actually coming from those who have ex-communicated Archbishop Vigano.