No worries, the BSOD app was designed to collect only that which is necessary for troubleshooting and nothing more. Still, it is does happen that, as in your case happened, some private/personal information is collected as well (such as the actual name of a user).
Some files are actually necessary to have. Hosts file, for example, is there in regards to piracy, it is the most common method we have come across for piracy and when we detect piracy we do not provide support per the forum's rules (+ other reasons).
If I'm not mistaken, some of the other files you mentioned are there for troubleshooting when something's wrong with the app, please note that this is just a mere assumption, I am not aware of the actual reason.
I know that I need at least systeminfo.txt, msinfo32.nfo, hosts.txt, evtxappdump.txt, evtxsysdump.txt, hkcusoftmswincvuuninstall.txt, hklmsoftmswincvuinstall.txt, kerneldumplist.txt, raminfo.html, dxdiagx86.txt, driverqfo.txt, driverqsi.txt and driverqv.txt, preferably unmodified.