I downgraded to an older laptop with no camera and no bluetooth. So I thought, why not remove bluetooth with synaptic? (I’m on Mint Cinnamon.) However when I clicked to remove libbluetooth3, it also wanted to remove Cinnamon and my network manager, etc., so I avoided that.
The removal went OK, since double checked items so they also did not remove otherwise unrelated things.
So the funny thing is how intertwined the dependencies of our libraries are!