Bitinfocharts says there's over 42k nodes. That chart says there's 6k.
That is saying it has found 42k nodes total that ever existed and were at one point peering. The 6k is the number of nodes currently online and active.
Thanks. Kind of alarming the number of nodes keeps dropping.
Not really, you only need to run a node if you are invested in keeping the protocol from changing otherwise you can just use an SPV wallet.
What is problematic is just a fiew Core developers like Luke-jr can force their will on us knowing full well transaction costs will go to their lighting network and sidechains.
I would say you're incorrect. A network with only a few nodes would be susceptible to a cyber attack.