I seem to be seeing the word phased used much more often these days where I should have expected fazed.
Perhaps it is a ‘mistake’ – phase is a (French) term from physics or engineering, or something to do with the moon, nothing to do with the good old English word meaning disturbed, upset or discombobulated.
The mistake seems to be made much more by men than by women – huge generalisation, I know.
They are much more likely to go through a phase when they are teenagers, so perhaps that explains it