I do not think that ignorance and/or evidence-free determination that an "-ess" word signifies inferiority is a reason for fiddling with the language.I use/used that term only because it appears that a substantial proportion of the people in question no longer like to be called "actresses", I suppose because they feel that it makes it sound as if they are doing something (maybe an 'inferior something'?) different from their male counterparts.
And manageress, waitress, hostess, stewardess.....I wouldn't say that I have succumbed to anything, other than perhaps the apparent wishes of those women who do acting. When they were all happy to be called actresses, there was no problem - we had actors and actresses, with no need to give any additional indication of gender.
Is this Female Prince Eugenie?