I agree with you.
Working within the parameters of there being no legal block to a woman choosing her name, I respect a woman's "free choice" to do as she wishes and have never criticised a woman for calling herself Mrs. Husband Surname.
However, stepping out of those constructed parameters.... whilst the vast majority of the women on here accept the fact that woman do not actually have the choice of what name other people wish to use for them (hence the "stop moaning, seriously bigger things worry about, stop being so ungrateful, bad manners, tough shit etc. etc.), they do NOT accept the idea that the name they have chosen for themselves comes from anything other than "free choice."
Thus Mrs Kittens is adamant she has called herself Mrs Kittens out of "FREE CHOICE", just as it seems to me that I have called myself Ms. My Name out of "free choice". Reality is, as you pointed out, there is not such thing as a "magic vacuum" in which we are able to make these choices.
And the fact that these threads come around again and again, and that women who are adamant it doesn't matter to them at all continue to comment on the subject again and again, shows that this is a very simple example of inequality.
If we existed alone we would not need a name at all. A name is a term of reference for the interaction with others, and if it is others who dictate what term of reference is used for you, it's quite clear you have no choice what your name is.
(also hungover still merry so happy to take responsibility for the impenetrability of my posts from yesterday and today)!