It isn’t unlike Benelux, or Scandinavia, or Iberian, or Balkan, or Gulf countries.
Greater Israel, Greater Italy, Greater Germanic Reich oh wait I lost the point, I guess any connections to irredentism are purely coincidental.
From the book “The Concept of “Greater China”: Themes, Variations and Reservation”:
The world is suddenly talking about the emergence of “Greater China.” The term has appeared in the headlines of major newspapers and magazines, has been the topic of conferences sponsored by prominent think-tanks, and is now the theme of a special issue of the world's leading journal of Chinese affairs. It thus joins other phrases – “the new world order,” “the end of history,” “the Pacific Century” and the “clash of civilizations” – as part of the trendiest vocabulary used in discussions of contemporary global affairs.
https://doi.org/10.1017/S030574100003229X
“Pro war” you say?
EDIT: it would be cool if you add "EDIT" when editing a comment or maybe think for moment before posting so that I don't reply to a different comment. Every time I reload the page I see a different comment, it's pretty funny honestly.
And I don’t understand your point. Greater China continues to be used today, like it’s been in the last 30 years. Who get to decide it’s relevant or not? UN?
As for “negative connotations”, you are entitled to your opinion, but that isn’t commonly shared, judging from how often it’s being used. I’m sure there are people in Finland who don’t like being called Scandinavian, given their distinct culture and language compared to other Scandinavian countries. That doesn’t mean it is unreasonable for someone to call them that.
https://en.wikipedia.org/wiki/Template:Pan-nationalist_conce... ("Template:Pan-nationalist_concepts")