Evans et al. (2021) seem to have been well aware of the circular reasoning in their argument.
Not much is known about the anatomy, biology, and ecology of the enigmatic trilobozoans.
That the same fossils can be attributed to at least six different phyla of marine invertebrates as well as terrestrial fungi really should give reason to pause.
Last but not least, there is this gem: In 1986 strange mushroom-shaped deep-sea animals were collected offshore South Australia.
Trilobozoans are unique to the Ediacaran biota; they appeared suddenly 560 million-years-ago in the fossil record without any precursors.