Yes, good to know as it's quite a usual counter-point I get. The differences are trivial in my opinion.

I take about two showers a day, mainly because I do sports, so I think I make up with the volume ... even training in sometimes dodgy gyms around the world or doing jiu-jitsu for a long time basically rolling on the ground with sweaty dudes, I was able to keep myself clean of any infections, fungal or viral ... I'm just taking regular shower clean myself properly, the the body should fend off easily.

It's anecdotal but I think doing hygiene properly and regularly makes bigger impact than temperature of a water.