So? if you roll with someone infected the risk is there with a washed gi or not, the risk is the bearer not his gi.
BTW im a enviromental science graduate and my wife has a Masters in microbiology, im not about Ad hominems but she > mysophobia myths.
Clean people are less likely to be infected than dirty people. If you're an environmental science major, then you'd be familiar with the fact that one of the major reasons humans now have such long, enjoyable lives is that there has been a major emphasis on public sanitation.
I'm in the most challenging (most competitive as a student, most difficult in terms of training, etc) aspect of healthcare in terms of education and delivery and I'll take my own knowledge over yours or your wives and wash my clothes. My education > hers. No offense, but it is MUCH, MUCH, MUCH more difficult to get where I am today than where either you or your wife are. And, there is a reason for that. I don't mean to be a jerk, but your ignorance on this topic is frankly dangerous. You might get some silly people to follow your lead, and next thing you know we'll have the MRSA equivalent of the CA whooping cough epidemic, which I attribute to the nonsense spouted off by morons like Jim Carrey and Jenny McCarthy about vaccinations.
Let me break it down... even without heat, the washing action will help remove bacteria. In addition, the "detergent" (a term your wife should be familiar with if she's a MS in Micro) will lead to cell membrane destruction of bacteria! (i.e. death) Sure, it's not optimal, but it's better than nothing. And, since you like statistics, you should understand how exposure and probability work together. Kills as much bacteria as possible, become less exposed, and be less likely to develop and infection. Easy as that.
And wrestling doesnt has gis, there are proper cares that lower infections and then there are mysophobist practices with pseudoscientifical basis.
Right... and the addition of the Gi (a big, cotton fomite) just makes it all the more likely you'll get an infection. Lots of potentially dangerous, common bugs can survive for MONTHS on unsanitary fomites, like a Gi.
I have no idea where you're getting the idea that sanitation and cleanliness is pseudoscience. There is a reason Florence Nightengale is so famous.