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.
Sure but how many do you need? Nodes maintain the protocol and store the blockchain, the incentive to run a node is to protect the value one has stored on the blockchain and ensure miners abide by the rules.
Not everyone needs to run a node, I suspect businesses high net worth individuals, and a myriad of services will have a need to run a node, (preserve the protocol and have at hand, proof the blockchain is correct.) So long as there is competition nodes will not collude, and the network will be resilient as miners are the ones that validate transactions and miners do what nodes allow them to do.
This number isn't an arbitrary but a function of the distribution of of value stored on the blockchain and the services that are dependent on it. Referencing a number from the past isn't a reliable comparison, back then there were other methods used to count and everyone has to download the full blockchain if they were to use Bitcoin.
The most effective way to attack the network is to have a private corporation employ developers to wright the code for Bitcoin and have it be the single source for all nodes.
That is the situation today that's why I am running a Bitcoin XT node.