Where did you get this strange 100k for full nodes? Right now https://bitnodes.io/  indicates 9972 reachable full nodes including .onion ones.  To be entitled "full" the node should accept  incoming   requests,  that is to have the relevant port ( 8333 on default)  open. Nodes for which incoming transactions are prohibited are not full. Is node you run since 2017 is really "full"?