With what? People have no idea what they are doing and by saying "contribute to the network" most of the time they do more damage than good, because they don't know too much.

Just by running a meaningless core node and a LN node with a shity LN channel, is NOT "contributing" to the network. You run a node for YOURSELF. That is a PRIVATE node. A node that is contributing to the network is one that is run in a very specific mode, with lot of resources... those are PUBLIC nodes.

First you need to learn. Then you get more comfortable and learn to use more tools, then you contribute if you have resources.