I did this, as a favor to a friend. She had written some erotica under a pen name and someone recirculated it, against her wishes, under her real name. Well, the magic of RSS took hold and suddenly any search for her was smutty. And she was looking for a job change at the time ...
You could also do it for another reason than marriage. The effect will be the same. And it’s easy to do. Whitewashing is definitely a lot more involved, especially if it goes beyond right to be forgotten requests.
I feel like most people realise this. I know people who have changed their names to “reinvent” themselves and no longer be associated with their past. Famously, witness protection programs also work like that sometimes. It’s just the most efficient and common sense way to give up one’s old identity.