He's talking about the characters having animal dicks or not.
Viewing post in Homecoming ~Morenatsu Revisited~ comments
I asked a question awhile back about whether some things (particularly with Shun) would change from the original game, and I mentioned how the way Shun's scenes were handled seemed to treat being uncut as a fetish, which was a bit weird to me. They told me that none of the guys in Morenatsu were going to be circumcised, and the way they answered seemed to indicate they were going with humanlike genitalia. There may be an exception for Tatsuki like there was before, but I can't say for sure.