Ha, ha, ha... but seriously who hasn't done something totally stupid on the bike at some stage of their cycling career (admittedly most of us wouldn't care to post accounts of these moments on internet forums).
You've got to remember that triathlon is a growing sport and most triathlon newbies are are also new to bike racing. Triathlon beginners are no more or less skilled than road cycling beginners, its just that there are more of them. There is a wide range of skill levels out there.
There are quite a few people who have transitioned (if you'll pardon the pun) from triathlon to road cycling and vice versa, including several professionals. Some people, self included, even do triathlon in summer and competitive road cycling in winter.