I know someone in my family who changed her "nom d'usage" ("usage name") with a personal reason related to their own preference, and discomfort with her official first name, but with no relation (from what I know) to :

• a name perceived by others as weird
• a name perceived by others as foreign (as in "foreigners", "immigrants", because of systemic racist and xenophobic affects.)
• a gender transition
• burning bridges with their official family (she didn't do that, and only changed their family name with marriage)
• escape from harassment

Her real/used/preferred first name is actually a common variant of a part of her official first name (a composite name). She did this change, a social transition of sort, decades ago.

Strangely, other people in the family don't see how it would be similar to a social transition due to gender identity. By even if they didn't make a difference, I'm not sure it would be better : she is often deadnamed by her own brothers and sisters as a joke, and they mock her for many other things. (I did too, while I hadn't escaped their influence and thus hadn't started deconstructing my affects. I hate that I did.)

My point was : name changes already happen with cishet persons without trying to escape an external threat. They're probably rare, and not that well accepted. (Better accepted that LGBTQIA+ chosen name, but still not good, except for some privileged celebrities.) I hope these get more widely accepted, whatever the reason. So yeah, let's normalize social acts usually associated with (oppressed) minorities, in a way that contribute to make the society a safer and better place. (I'm of course not talking about culural appropiation here.)

Note: In France, from what I understand, "nom d'usage" is a legal qualification for a name commonly used socially, and recognised by authorities, but which is not one of the person's offcial names. It is commonly known to be used by people in the situations listed above. In addition, we can have many official "prénoms" (first names), and each of them can legally be used both separately and interchangeably as a single first name in official or contractual documents. (Except some administrative procedures that impose listing all of the first names.)

At the very least, everyone should be entitled to at least one free name change as an adult. But children and teenagers need to have the right to their own names, too. There's already a history of children taking their parents to court in order to get a name change when the name is absolutely insane (but we all know that would be rejected for a trans kid sadly).