I do understand what you mean, OL and when murders happen here we do discuss all possibilities as to who the suspects could be before an arrest has been made. However this case is really not open, as you have said. This one has ended with an arrest and two charges of premeditated homicide and was done over a month ago.
Now it is very common when cases have not been solved yet or the murderer arrested to comment on whom the poster may think is guilty of the crimes. We saw that happen in the Jessica Lunsford case when many posters thought Mark or Archie Lunsford was the suspect that had killed Jessica and then it was well discussed here that Steve Greone was discussed as being the suspect when his ex wife, her boyfriend, his son Slade was murdered and his other two children, Shasta and Slade were missing at the time. But this was all before John Couey and Joesph Duncan were arrested.
Heck posters even continued to blame Daniel Horowitz for the murder of his wife, Pamela, even after Scott Dyleski was arrested and charged with her murder. (A crime in which SD was convicted and received LWOP)
If you want to discuss other suspects then of course that is your right and everyone's right here but for me, I am not going to speculate that another is possibly the suspect when there is nothing to support it.
LE/DA have the suspect in the case and he is arrested and charged.
But for me personally, I will wait on that evidence to unfold on this defendant before I leap to speculating about someone else, who has not been charged with anything and it has been over a month. Just my own opinion though.
imoo