Hi, I do not mean to cause any conflict or argument, but I would like to share my perspective.
Many countries besides China celebrate Lunar New Year ("Tết" in Vietnam, "Seollal" in Korea, "Losar" in Tibet,...)...
To me, calling "Chinese New Year” ignores the fact that these nations have their own traditions, foods, and customs,...
While the Chinese lunisolar calendar is the base, each country has adapted it differently for centuries.
The Islamic calendar is purely lunar, but the Chinese calendar is lunisolar, meaning it follow both the moon and the sun.
Just because Muslims have a lunar calendar, it does not mean “Lunar New Year” must refer to their new year.
When people say “Lunar New Year" they mean the celebrations happening in East and Southeast Asia, not the Islamic New Year.
Bassed on what I have learned and know about Chinese New Year, the modern Chinese lunisolar calendar was developed much later, during the Han Dynasty (206 BCE-220 CE).
I agree that the Purple Mountain Observatory in China calculates the calendar, but that does not mean it belongs only to China. Other countries have developed their own versions.
Using "Lunar New Year" is more inclusive and respects the traditions of Vietnam, Korea, Mongolia, Tibet, and other countries that celebrate it differently. Calling it "Chinese New Year" erases their cultural identity.