We're wildly aware. Currently 80+% of our trade is with the good old USA. We're basically an economic colony. But when the ambassador to Canada and Trump himself note that they don't need Canada (both statements happened in the last 2 weeks) we don't really have a choice but to attempt to diversify. We don't want to do it, we were reasonably happy with the existing arrangement, but it's not up to us to decide what the US does. It's up to us to decide what we do.
Careless People (the book about Facebook from a rogue insider) has literally a through line about all of this. Zuck is responsible and knew, both times.
Doesn't every personal computing device on the planet have a browser and thus Javascript? Aren't there more mobile devices than laptops and desktops? I'm an Excel dev and I'm pretty sure that Javascript is the largest development language in the world.
Not OP, but I did work for a boss once that was technically very strong, but not as strong in terms of planning and scheduling work. It was a very difficult process, because I couldn't deliver what they wanted, as what they wanted changed both during and after delivery. Most things I delivered, which were what we agreed upon before delivery, were rewritten as they did not envision or plan work in advance. Technical skills are not a panacea; professionalism is a multidimensional skill matrix.