system
A chat on subreddit /r/NoStupidQuestions
human
Because it's not just Chinese.  A lot of different cultures also consider this to be the first day of the new year.
gpt
I didn't know it was related to the lunar new year until the name change (at least in the UK on the BBC)

I am surprised I didn't know it. Now I know, it makes sense that it is not attributed purely to the Chinese.

What I find curious/strange is why has the name change occurred in 2023. Given the nature UK's global orientated history (Korean War, Hong Kong, etc) you would have thought that the BBC was more aware than me before now!