Did not find any obvious references as to who is backing this project, but it seems to be a Chinese software consultancy.
https://www.highgo.ca/
> What’s the point of doing some just for the sake of destroying other people’s business?
Apart from any potential ideological reasons related to open source, they are likely planning to support their own business by providing a compelling product.
Postgresql, on the other hand, is dead simple to manage.
It's my dream to move all my Oracle databases to Postgresql.