Merriam-Webster expands the definition of the word "They"

[Moontrane]

https://www.merriam-webster.com/dictionary/they

4 —used to refer to a single person whose gender identity is nonbinary (see NONBINARY sense c)
I knew certain things about … the person I was interviewing.… They had adopted their gender-neutral
name a few years ago, when they began to consciously identify as nonbinary — that is, neither male
nor female. They were in their late 20s, working as an event planner, applying to graduate school.

— Amy Harmon

[IroNat]

Insanity.

[Irongrip400]

Not gonna lie, I’ve referred to people as “they” when talking about them much like the sentence in the definition, although not with the same context. It is getting a bit weird when people start referring to themselves this way though.