Lots of people seem to have opinions on these conventions, but to be seriously seriously honest, it is very rare I have been involved in any tech thing where, if you mandated that 90% of the participants must be male, that it would change the demographic. That is a satirical way of demonstrating that most technical, mathematical, engineering, and computer things are male dominated purely by their origin and lineage of development. It's like asking a 14 year old boy to go lingerie shopping. People react because it's not the norm. The reaction is neither good nor bad. I react to people too.