USA isn't in great shape either but at least it's not a negative growth rate.
The US has an immigration 'problem'. That is, immigrants have fueled the growth of this country from its earliest days, and yet today immigrants are detested by a significant percentage of the US electorate. The problem is not in immigration--it's in a failure to regulate that immigration so that it does not negatively impact the economy/society in the short term. In the long term, immigration is essential to offset a drop in 'natural' population growth.
If we are to have a labor force that supports an aging baby boomer population, then we need immigrants. Nobody wants to immigrate to Russia or China. As long as the US remains a magnet for people around the world, we do not have to suffer their negative population growth. The issue is not whether or not we need immigrants. The issue is how to manage the flow of immigrants.
https://cis.org/Report/Estimating-Impact-Immigration-US-Population-Growth
As for your discussion about Hive--the economics of the platform are beyond my ken, but I do agree that growth potential exists in those populations that are looking for external economic resources. It's one of the reasons I'm a big Hive cheerleader. It gives people options who otherwise might not have them. Besides that, of course, I love Hive ;))