It is annoying getting crap for a choice in social and work situations, especially if someone else is bringing it up repeatedly when you don't want to be the topic of conversation.
I think there is room to discuss the issues with social ideas around names in marriage, and acknowledge sometimes we make choices for reasons beyond our ideals, without either targeting individuals or dismissing those who want to talk about this issue as just getting worked up over nothing like names have no meaning beyond the personal.
I changed my entire name. Yes, part of that was replacing the surname on my birth certificate with my spouse's which I did for several reasons from nerves about how it would look to the Home Office when on a spousal visa to his brother getting cancer. If things were a bit different, we'd have chosen a new surname together (I was very intent on changing mine, started the process at 18). Now we're the only ones left living with it in the family that we know and I've spent more of my life with that name than the one I begrudgingly got when I was weeks old. It's mine, my kids were given our name and it's now theirs to do with as they see fit. I can't ignore that I chose it in part because of the systems around me, just as I chose my other names to stand in conflict with it.
I chose to replace my an Anglicised first name with a less Anglicised one that had more meaning to me. Personal, but also political - unlike my surname, that one I've gotten shit for because wanting people to prounounce two syllables that sound like English letters isn't a bar I'm willing to lower. Especially not now I have a few more pieces of my family tree with names that are pretty much unheard of now because they'd all made the personal and political choice to pick names that fit in and for their kids to fit in more. I took one step forward on that road and then went off to the side, because I do want to make the choice not to have that part of me erased, that I'm not English and I want that respected.
Some feel the same about women feeling more comfortable not changing their surnames on marriage, that it's a long history of erasure. As I said, I don't think individuals should be needled about a done choice, but I also don't think it's only a personal choice that should never be discussed or that they're just getting worked up over nothing. Names are important, otherwise why bother changing them?
Feminism has dozens of branches. I don't think I entirely agree with any of them, but they're each a lens on the world. What benefits there are to personally and politically identifying with an ideology is up for debate, but automatically identifying yourself by a non-identity is the same and impacts the lens people are going to view the words through.