Even with this, it seems to be an unhealthy concentration at first.

The linked substack also published this tweet

Exactly.

It just goes to show that most of the comments here are entirely clueless about the whole ordeal and don't wait for the facts to come out and jump with any nonsense takes. It turns out it is just a new service that has gotten traction attracting some BTC volume in the recent uptick in Bitcoin ordinals. That is it.

All can be found and traced for anyone to see in the blockchain.