I do agree that people in the same sport will train the same muscles, but they normally start with a biological advantage in order to be good enough in the sport to start to train specifically for it to begin with. There are other things than height, such and foot/hand size, torso length, natural testosterone levels, how fast your body removed lactic acid, if you were born with a cardio-vascular issue, dozens of factors that affect your balance, and much more.
Someone with Ehlers-Danlos isn't likely to become a powerlifter.
If you look at who is doing the work it'll give you a clue.
Getting a job when your first language isn't English is hard. It's also hard when all of your references might not speak English, are half a world away, and you don't really have a "network" in Canada. You might be willing to put up with a lot of shit in order to have some work history in Canada.