“1. Run a large number of xmr nodes from various geographical locations and ISPs to capture transaction ip address and time stamps. 2. Transaction feed (ip and everything) from one or more popular wallets’ default nodes.”

This image belongs to the chainalysis video where they say they can trace Monero transactions. As you can see in a blockchain you need privacy at the chain level and at the network level.

If one of the two fails you have no privacy. It's quite complicated to get privacy, it's not as easy as using tor either, you also have to mitigate time analytics.

To mitigate it you need:

- use Tor
- Different circuits for each operation
- Add delays to mitigate timing analysis attacks.

If on top of that you connect to a centralized server without all these precautions, the privacy chain is useless. All of you who used Samourai's tools simply threw your money away. 

https://m.primal.net/LQtl.png 
https://m.primal.net/LQuH.png