Forgiven means you are allowed on Krakoa and won't be punished by mutants. People are still free to hate you just look at the Fenris Twins and Omega Red.
Wanda has been running around all this time with no consequences anyway.
Yes because all mutants automatically have Krakoa citizenship. It is a fresh start for them unless they break the 3 laws. Humans don't have automatic krakoa citizenship there for they don't get amnesty but they are allowed on Krakoa as long as they have a mutant with them. Do you get it?