This is a myth.
System stability isn't linked to the number of moving parts, but rather
to how the parts interact.
Think of a bicycle chain...so many parts, but it functions so reliably.
More complex systems can be stable, eg, living animals with their
self regulating metabolisms. Democracy, with a well designed system
of proverbial checks & balances can be more stable than simple top
down governments like the old USSR.
I'll bet you a fiver that after Trump's reign ends, we'll still have democracy.
