that's generally not true from a business perspective though in relation to gender. if a business is open to the public, you can still discriminate based on sex. though trannies are a whole other can of worms. anti-discrimination laws mainly focus on race, nationality, and religion. the only issue you would run into is smear campaigns from news outlets and organizations protesting you, which for some businesses that could be a benefit (free advertising).  if your club is not a business open to the public, but instead a private membership with vetting and selection, then you can discriminate as much as you want legally.
Canada