EDIT: look at the comment answer to this one for a link to the study!
So, just out of interest, because the article here is rather short and lacking in sources, I wanted to see some details of the study. I found another article, quoting a few additional things, as well as linking to the study PDF. Well, the PDF link is broken - and trying to search for it yields no useful results. I tried by topic, I tried by number derived from the link (BDV25-977-13). I tried on the Florida Department of Transportation site, as well as the University of South Florida site. Either I am stupid in my approach, or for some weird reason, the study has been retracted from public publishing? I don't want to put on too much of a tinfoil hat here, but with Florida's administration being what it is, I would not be too surprised if that tinfoil hat is actually appropriate here, and it was retracted for not fitting the narrative.
As an anecdotal point: I'd actually expect there to be a slightly higher "recklessnes" score for cyclist - but only because cycling does not require a license, and cyclists can be kids and teenagers, with sometimes a lacking understanding of traffic rules. (I know I regularly and unwittingly broke some traffic laws here in Germany as a student cycling to school, which I only realised later in life).
