Is that a serious question? He believes in a young earth based on his interpretation of Genesis. I'm pretty sure that makes him a YEC. Is there any other kind?
This is not really a fair critique.
ReMine published the Biotic Message in 1993, well before google existed. The internet was nothing like what we see now, and most of those hits would not be accessible then. Most importantly, DNA sequencing was still in its infancy, we are well before 2000 when the human genome is published, and 2005 with the chimp genome is published. He did not know what we know now.
At the time, "phylogeny" was determined by investigator selected phenotypes (which are subject to selection bias) and short DNA stretches (which are also subject to selection bias). This data was not nearly as convincing as the corresponding and quantitative (and without selection bias) story we read from unbased genome studies. ReMine just did not have that information in 1993.
Since then too he appears to continue to hold to his YEC beliefs, but he has not been terribly active in the conversation. It seems to be a tacit sign he knows his argument did not pan out.