If living systems were deliberately engineered, how good an engineer was the one behind those living systems?
What ID proponents are encouraging in the greater scientific community is honesty about the fact that both design and ancestry can create genetic similarity.
The fact that known natural biological processes can produce non-tree-like patterns is problematic not for ID proponents but for proponents of common ancestry.
The tree-like pattern from the dataset was not very strong. Of course, if you shuffle it, it looks strong compared to randomness.
Host Sarah Chaffee and biologist Ann Gauger discuss panspermia, the topic of a peer-reviewed paper by several quite serious scientists.