Your comment was enough to cause me to Google it. I'm glad I did (that isn't to say happy about the circumstance), this kind of drama doesn't come around these parts often...
As far as I can tell most of those comments pre-dates his conviction.
During the trial, I too saw plenty of reasons not to want to assume guilt prematurely - there were plenty of weird circumstances, and the evidence did not necessarily seem overwhelming at a distance (quite possibly reading the full transcript might have reduced that doubt) though it certainly pointed in his direction. The question really was not whether or not he looked guilty, though, but whether or not the evidence proved it beyond reasonable doubt.
But of course he afterwards ended up leading police to her grave, causing whatever doubt was justified before to disappear (and the pre-conviction doubt also steadily dropped largely thanks to his own behaviour during the trial).
The first line of his Wikipedia entry is a tell-all: https://en.wikipedia.org/wiki/Hans_Reiser