It was kind of rushed, JMO. It seemed that, once they had enough information to deem it a suicide, that's what they did. There was quite a bit of evidence they didn't test, look for or address. JMO, they saw what they wanted to see, then closed the investigation. Once the COD was determined by them and the case closed, everything was cleaned up, digital searches, etc. stopped. JMO, they should have retrieved digital evidence for everyone that night.
ETA: The ME was a fairly new guy. Basically, there were a lot of questions about evidence, lack of testing, possible erroneous conclusions, etc., but the San Diego Sheriff's Office and ME basically have "stonewalled" the public for years. They put their (JMO flawed) case out to the public, then stuck with that story, refusing to further investigate.
en.wikipedia.org