I'm looking at it from the standpoint of what is at stake, really. Bitcoin's protocol security is dependent on how decentralized the network is, and much of the power of protocol decision-making lies with the nodes. Think of the nodes here like the U.S. Senate.

For a system that is rapidly and drastically becoming economically valuable, the number of decision makers (a.k.a nodes that protect the integrity of the network) seems really small, especially when weighed side by side with the number of people using that network and the value vested in it.

If your numbers are accurate, then the growth rate of the nodes post 2021 is reasonably cool, cos it means there are 7+ new nodes every day from 2021 till date. However, my attention is on the general number.

We should have the least 100k nodes accounted for, while hoping that there are numerous other ones not accounted for.