It’s terrible because you’re treating the Taiwanese the same as the Chinese.
The current map China insists is wrong to begin with as it includes Tibet, Uyghur, and Southern Mongolia which they’ve been colonizing.
The world would be a far, far better place is Taiwan were to reclaim the mainland rather than the other way around. This is pretty much how the Kuomintang viewed things for decades. So it's actually a great map, not a "terrible" one :)