The garbage collector removes all packages/derivations that are not (transitively) used any more. So it is similar to apt-get autoremove. I don’t think that classifies as bloat. You could just regularly run the garbage collector.
You realise that debt of the government is equal to wealth in the private sector? Being debt-free would mean that there is no central bank money in circulation. How would this help the actual economy?
I disagree since overtaking a cyclist in the same lane is unsafe anyway. In the city I always cycle in the middle of the lane because it prevents unsafe takeovers and dooring.