Information about dht usage in tox from https://tox.chat/faq.html:
What is stopping people from tracking me through the public DHT?
Tox generates a temporary public/private key pair used to make connections to non-friend peers in the DHT. Onion routing is used to store and locate Tox IDs, to make it more difficult to, for example, associate Alice and Bob together by who they are looking for in the network.
This text shows that dhts like opendht offer the possibility of tracking users - and that special countermeasures are necessary and possible to prevent this. What does Jami look like? Are the necessary countermeasures against tracking via the dht applied? Or are there technical differences so it is not necessary to implement them?