yes they are. see this for instance:
https://www.researchgate.net/public...zoan_Gene_Repertoire_and_Genomic_Organization
"We found 1292 eumetazoan gene families that had detect-
able descendants in anemone and at least two of
the three vertebrates, but that appeared to be
absent in both fruit fly and soil nematode. This
indicates that they were either lost or highly
diverged in both of these model protostomes,
extending the list of such genes found in EST
studies"
so they just dont find those genes and claiming for gene loss or a different selection pressure.
i think its an hard claim. and hards claims need hard evidences. i dont think we have hard evidence that a self replicating robot can evolve by a natural process. do you?