That's a curious suggestion. I've never taken a serious look at RxJs, but I've used obsevables in android so might do that. Vue is like React but just enough separation to get all the benefits that I find in composition as well as the templating and stuff from Angular. How did you make the switch to game dev?
I've always had gamedev as a goal, and since 2012 participated in "game jams", which are basically make-a-game hackathons; as well as making free web games/prototypes. The industry is very portfolio-focused.
Mostly did webdev as a way of supporting myself until I got a gamedev job (but I like doing webdev too). I currently work at a company that makes corporate/educational games, but am collecting more experience to be more competitive on the actual entertainment industry. Which is a bit more challenging given I'm based in Brazil.
That being said, it's much easier to "switch careers" when you're 22 and it barely started!
