This plan is destabilizing to the very existence of the United States.
The Constitution is therefore destabilizing.
It certainly was in 1861, when the 3/5ths rule was one of things that led the North to war - why should the Slave Power have more representation than they deserved by counting people they had enslaved?
It's no accident that the 14th was written to get rid of that. But misinterpretation by scoundrels intent on aggregating illegitimate power to themselves is still a risk with the amended Constitution if we let them take advantage of it.