Took me a year before I found a dev/manager that even scratched at that power. A dev that pushed me to learn it. Before that I was a rails dev writing elixir. :)
I should mention there is no problem not going there. I respect my teammates. Ruby/Rails is a great way to get things done. I would 100% use it as my MVP lang.
You can know enough to get going quickly, but there's a healthy layer of power that will only come with time.